1. Gíslason T, Gíslason D, Blöndal T, Helgason H, Rafnason V. Öndunarfæreinkenni Íslendinga á aldrinum 20-44 ára. Læknabladid 1993; 79:343-347.

2. Janson C, Björnsson E, Hetta J, Boman G. Anxiety and depression in relation to respiratory symptoms and asthma. Am J Respir Crit Care Med 1994; 149:930-934.

3. Wieslander G, Janson C, Norbäck D, Edling C, Björnsson E, Stålenheim G. Occupational exposure to water based paints and asthma symptoms, bronchial hyperresponsiveness and lung function. Int Arch Occup Environ Health 1994; 66:261-267.

4. Björnsson E, Janson C, Håkansson L, Enander I, Venge P, Boman G. Serum Eosinophil Cationic Protein in relation to bronchial asthma in a young Swedish population. Allergy 1994; 49:730-736.

5. Björnsson E, Plaschke P, Norrman E, Janson C, Lundbäck B, Rosenhall A, Lindholm N, Rosenhall L, Berglund E, Boman G. A population-based study of symptoms related to asthma and chronic bronchitis in three areas of Sweden. Eur Respir J 1994; 7:2146-2153.

6. Gíslason D, Gíslason T, Blöndal T, Helgason H. Brádaofnæmi hjá 20-44 ára Íslendingum.Læknabladid 1995; 91:606-61

7. Janson C, Gislason T, De Backer W, Plaschke P, Björnsson E, Hetta J, Kristbjarnason H, Vermeire P, Boman G. Daytime sleepiness, snoring and gastroesophageal reflux among young adults in three European countries. J Intern Med 1995; 237:277-285.

8. Björnsson E, Norbäck D, Janson C, Widström J, Palmgren U, Ström G, Boman G. Asthmatic symptoms and indoor levels of microorganisms and house dust mites. Clin Exp Allergy 1995; 25:423-431.

9. Norbäck D, Björnson E, Janson C, Widström J, Boman G. Volatile organic compounds (VOC), formaldehyde, and carbon dioxide (CO2) in dwellings in relation to asthmatic symptoms. Occup Environ Med 1995; 52:388-395.

10. Janson C, Gislason T, De Backer W, Plaschke P, Björnsson E, Hetta J, Kristbjarnason H, Vermeire P, Boman G. Prevalence of sleep disturbances among young adults in three European countries. Sleep 1995; 18:589-597.

11. Björnsson E, Janson C, Plaschke P, Norrman E, Sjöberg O. Venom allergy in adult Swedes: a population study. Allergy 1995; 50:800-805.

12. Håkansson L, Björnsson E, Janson C, Schmekel B. Increased adhesion to VCAM-1 and ICAM-1 of eospinophils from asthmatic patients. J Allergy Clin Immunol 1995; 96:941-950.

13. Björnsson E, Janson C, Håkansson L, Enander I, Venge P, Boman G. Eosinophil peroxidase; a new serum marker of atopy and bronchial hyperresponsiveness. Respir Med 1996; 90:39-46.

14. Janson C, Gislason D, Iversen M, Norrman E, Omenaas E, Plaschke P. Prevalensen av astmasymptom och användningen av astmaläkemedel i fyra nordiska länder.Nord Med 1996: 111:147-150.

15. Björnsson E, Hjelm E, Janson C, Fridell E, Boman G. Serology of Chlamydia relation to asthma and bronchial hyperresponsiveness. Scand J Infect Dis 1996; 28:63-69.

16. Ludviksdottir D, Björnsson E, Janson C, Boman G. Habitual coughing; association to asthma, anxiety and gastroesophageal reflux Chest 1996; 109:1262-1268.

17. Jögi R, Janson C, Björnsson E, Boman G, Björkstén B. The prevalence of asthmatic respiratory symptoms among adults in an Estonian and Swedish university town. Allergy 1996; 51:331-336.

18. Plaschke P, Janson C, Norrman E, Björnsson E, Lundbäck B, Lindholm N, Rosenhall L, Berglund E, Järvholm B, Boman G. Skin prick tests and specific IgE in adults from three different areas of Sweden. Allergy 1996; 51:461-472.

19. Björnsson E, Hjelm E, Janson C, Fridell E, Boman G. Serology of respiratory viruses in relation to asthma and bronchial hyperresponsiveness. Upsal J Med Sci 1996; 101:159-168.

20. Janson C, De Backer W, Gislason T, Plaschke P, Björnsson E, Hetta J, Kristbjarnason H, Vermeire P, Boman G. Increased prevalence of sleep disturbances and daytime sleepiness in subjects with bronchial asthma: a population study of young adults in three European countries. Eur Respir J 1996; 9:2132-2138.

21. Björnsson E, Janson C, Plaschke P, Norrman E, Sjöberg O. Senitization to food allergens in adult Swedes; relation to asthma and bronchial hyperresponsiveness. Ann Allergy, Asthma, Immunol 1996; 77:327-332.

22. Norbäck D, Wieslander G, Björnsson E, Janson C, Boman G. Eye irritation, nasla congestion and facial skin itching in relation to emissions from newly painted indoor surfaces. Indoor Built Environ 1996; 5:270279.

23. Wieslander G, Norbäck D, Björnsson E, Janson C, Boman G. Asthma and the indoor environment: the significance of emission of formaldehyde and volatile organic compounds (VOC) from newly painted indoor surfaces. Int Arch Occup Environ Health 1997; 69:115-124.

24. Gislason T, Gislason D, Blöndal T. Astmi og öndunarfæræraeinkenni medal 20-44 ára Íslendinga. Læknabladid 1997; 83:211-216.

25. Janson C, Björnsson E, Enander I, Håkansson L. Seasonal variation of serum eosinophilic cationic protein (ECP) in a general population sample Respir Med 1997; 91:347-349.

26. Janson C, Chinn S, Jarvis D, Burney P, European Community Respiratory Health Survey Physician diagnosed asthma and drug utilization in the European Community Respiratory Health Survey. Eur Respir J 1997; 10:1795-1802.

27. Lindberg E, Janson C, Gislason T, Björnsson E, Heta J, Boman G. Sleep disturbances in a young adult population: gender differences and association to anxiety and depression. Sleep 1997; 20:381-387.

28. Wieslander G, Norbäck D, Janson C, Edling C. Validation of a self-administered questionnaire on asthmatic symptoms and atopy in house painters.J Occup Health 1997; 39:331-338.

29. Fluge Ø, Omenaas E, Eide GE, Gulsvik A. Fish consumption and symptoms of airways obstruction among young adults in a Norwegian community. Eur Respir J 1998; 12: 336-340.

30. Norrman E, Plaschke P, Björnsson E, Rosenhall L, Lundbäck B, Janson C, Lindholm N, Boman G. Prevalence of bronchial hyperresponsiveness in the southern, middle and northern parts of Sweden. Respir Med 1998; 92:480-487.

31. Janson C, Chinn S, Jarvis D, Burney P, European Community Respiratory Health Survey. Individual use of anti-asthmatic drugs in the European Community Respiratory Health Survey. Eur Respir J 1998; 12: 557-563.

32. Jögi R, Janson C, Björnsson E, Boman G, Björkstén B. Atopy and allergic disorders among adults in Tartu, Estonia compared to Uppsala, Sweden. Clin Exp Allergy 1998; 28:1072-1081.

33. Uibo R, Talja I, Jõgi R, Janson C, Björnsson E, Boman G, Mandel M, Björkstén B. Autoantibodies in Estonia and Sweden, populations with different responses to allergens. Int. Arch. Allery and Immunol 1998; 117:126-130.

34. Svanes C, Omenaas E, Eide GE, Fluge Ø, Gulsvik A. Hospitalisation for lung disease in early childhood and asthma symptoms in young adulthood. Respir Med 1998; 92:1003-1009.

35. Svanes C, Omenaas E, Heuch JM, Irgensý LM, Gulsvik A. Birth characteristics and asthma symptoms in young adults: results from a population-based cohort study in Norway. Eur Respir J 1998; 12: 1366-1370.

36. Björnsson E, Janson C, Norbäck D, Boman G. Symptoms related to the Sick Building Syndrome in a general population sample: associations with atopy, bronchial hyperrresponsiveness and anxiety. Int J Tubercul Lung Dis 1998; 2:1023-1028.

37. Norbäck D, Björnsson E, Janson C, Palmgren U, Boman G. Current asthma and biochemical signs of inflammation in relation to building dampness.Int J Tubercul Lung Dis 1999 3: 368-376.

38. Svanes C, Jarvis D, Chinn S, Burney P, European Community Respiratory Health Survey. Childhood environment and adult atopy: Resultsfrom the European Community Respiratory Health Survey. J Allergy Clin Immunol 1999;103:415-420.

39. Jentoft HF, Omenaas E. Eide GE, Gulsvik A. Agreement between dual adrenalin-Pirquet tests and dependence of time prior to reading. Int J Tubercl Lung Dis 1999; 4: 326-9.

40. Plaschke P, Janson C, Norrman E, Björnsson E, Ellbjär S, Järvholm B. Association of skin test reactivity, specific IgE and total IgE with asthma and bronchial hyperresponsiveness in Swedish adults: pets and not mite are the most important allergens. J Allergy Clin Immunol 1999; 104:58-65.

41. Jõgi R, Janson C, Hedenström H. Comparison of two methacholine challenge methods using Spira-2 or Mefar dosimeter. Clin Physiol 1999; 19:300-304.

42. Plaschke P, Janson C, Balder B, Löwhagen O, Järvholm B. Adult asthmatics sensitised to cats and dogs: Symptoms, severity and bronchial hyperresponsiveness in patients with furred animals at home and patients without these animals. Allergy 1999; 54:843-850.

43. Gislason D, Björnsson E, Gislason T, Janson C, Sjöberg O, Elfman L, Boman G. Sensitization to airborne and food allergens in Reykjavik and Uppsala – a comparative study. Allergy 1999; 54:1160-1167.

44. Blanc PD, Ellbjär S, Janson C, Norbäck D, Norrman E, Plaschke P, Torén K. Asthma related work disability in Sweden: the impact of workplace exposures. Am J Respir Crit Care Med 1999; 160: 2028-2033.

45. Plaschke P, Janson C, Norrman E, Björnsson E, Ellbjär S, Järvholm B. Onset and remission of allergic rhinitis and asthma and the relationship with atopic sensitization and smoking. Am J Respir Crit Care Med 2000; 162:920-924.

46. Omenaas E, Jentoft HF, Vollmer WM, Buist AS, Gulsvik A. Absence of relationship between tuberculin reactivity and atopy in BCG vaccinated young adults. Thorax 2000; 55: 454-458.

47. Jentoft HF, Omenaas E. Eide GE, Gulsvik A. Comparing the adrenaline-Pirquet test with international PPD tuberculin tests. Respir Med 2001: 95: 205-11.

48. Janson C, Chinn S, Jarvis D, Burney P, Europena Community Respiratory Health Survey. Determinants of cough in the European Community Respiratory Health Survey. Eur Respir J 2001; 18: 647–654.

49. Janson C, Chinn S, Jarvis D, Zock J-P, Torén K, Burney P. Effect of passive smoking on respiratory symptoms, bronchial responsiveness, lung function and total serum IgE in the European Community Respiratory Health Survey. Lancet 2001; 358: 2103-2109.

50. Janson C , Anto J, Burney P, Chinn S, de Marco R, Heinrich J, Jarvis D, Kuenzli N, Leynaert B, Luczynska C, Neukirch F, Svanes C, Sunyer J, Wjst M The European Community Respiratory Health Survey (ECRHS) so far: what are the main results? Eur Respir J 2001; 18: 598-611.

51. Bråbäck L, Plaschke P, Nilsson L, Boman G, Janson C. Vad kan vi lära från internationella befolkningsstudier om astma och allergi? Läkartidningen 2001; 98:5322-5326.

52. Jentoft HF, Omenaas E. Eide GE, Gulsvik A. Absence of relationship between tuberculin reactivity and asthma symptoms, level of FEV1 and bronchialhyperresponsivenss in BCG vaccinated young adults. Allergy 2002: 57: 336-40.

53. Gislason T, Janson C, Vermeire P, Plaschke P, Björnsson E, Gislason D, Boman G. Respiratory symptoms and reported gastroesophageal reflux during sleep. A population based study of young adults in three European countries. Chest 2002;121:158-163.

54. Svanes C, Jarvis D, Chinn S, Omenaas E, Gulsvik A, Burney P for the European Community Respiratory Health Survey. Early exposure to children in family and day care are related to adult asthma and hay fever: results from the European Community Respiratory Health Survey. Thorax 2002;57: 945-50.

55. Jentoft HF, Omenaas E. Eide GE, Gulsvik A. Tuberculin reactivity: prevalence and predictors in BCG vaccinated young Norwegian adults. Respir Med 2002; 96: 1033-39

56. Jõgi R, Björkstén B, Boman G, Janson C. Serum eosinophil cationic protein (S-ECP) in Tartu, Estonia: relationship to atopy. bronchial responsiveness and asthma. Respir Med 2002; 96: 525-529.

57. De Marco R; Bugiani M; Cazzoletti L; Carosso A; Accordini S; Buriani O; Carrozzi L; Dallari R; Giammanco G; Ginesu F; Marinoni A; Lo Cascio V; Poli A; Struzzo P; Janson C; for ISAYA study group. The control of asthma in Italy. The results of a multicentre Italian Study. Allergy 2003; 58:221-228.

58. Omenaas E, Fluge Ø, Buist AS, Vollmer WM, Gulsvik A. Dietary vitamin C intake is inversely related to cough and wheeze in young smokers. Respir Med 2003; 97: 134-42.

59. Svanes C, Heinrich J, Jarvis D, Chinn S, Omenaas E, Gulsvik A, Künzli N, Burney P. Pet-keeping in childhood and adult asthma and hayfever: European Community Respiratory Health Survey. J Allergy Clin Immunol 2003; 112:289-300.

60. Blanc P, Janson C, Burney P, Torén K. The prevalence and predictors of respiratory-related work limitation and occupational disability in an international study. Chest 2003 124: 1153-1159.

61. De Marco R, Accordini S, Cerveri I, Corsico A, Sunyer J, Neukirch F, Künzli N, Leynaert B, Janson C, Gislason T, Vermeire P, Svanes C, Anto JM, Burney P. An international survey of chronic obstructive pulmonary disease in young adults according to GOLD stages. Thorax 2004; 59:120-125.

62. Svanes C, Omenaas E, Jarvis D, Chinn S, Gulsvik A, Burney P. Parental smoking in childhood and adult obstructive lung disease: results from the European Community Respiratory Health Survey. Thorax 2004; 59:295-302.

63. De Marco R, Pattaro C, Locatelli F, Svanes C.Influence of early life exposures on incidence and remission of asthma throughout life. J Allergy Clin Immunol 2004; 113:845-852.

64. Bousquet PJ, Chinn S, Janson C, Kogevinas M, Burney P, Jarvis D, S. Chinn S. Geographical variation in the prevalence of positive skin tests to environmental aeroallergens in the European CommunityRespiratory Health Survey I. Allergy 2007; 62:301-309.

65. Bousquet PJ, Leynaert B, Neukirch F, Sunyer J, Janson C, Anto J, Jarvis D, Burney P Geographical distribution of atopic rhinitis in the European Community Respiratory Health Survey I. Allergy 2008; 63:1301-1309.

66. Bjerg A, Ekerljung L, Middelveld R, Dalén S-E, Forsberg B, Franklin K, Larsson K, Lötvall J, Ólafsdóttir IS, Torén K, Lundbäck B Janson C. Increased Prevalence of Symptoms of Rhinitis but not of Asthma Between 1990 and 2008 in Swedish Young Adults: Comparisons of the ECRHS and GA2LEN Surveys. PLoS One 2011; 6:e16082.