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Scandinavian Journal of Medicine & Science in Sports|February 12, 1998
The physical activity level in children with asthma based on a survey among 7-16 year old school childrenW NystadTidsskrift for Den Norske Laegeforening : Tidsskrift for Praktisk Medicin, Ny Raekke|October 10, 1992
[Prevention of unwanted pregnancies in adolescents in a suburb--is it valuable?]P NafstadTidsskrift for Den Norske Laegeforening : Tidsskrift for Praktisk Medicin, Ny Raekke|October 20, 1989
[Use of ultrasonics in obstetrics in 1988]P Nafstad, B BackeLancet (London, England)|September 18, 2001
Relation between occurrence of type 1 diabetes and asthmaL C Stene, P NafstadTidsskrift for Den Norske Laegeforening : Tidsskrift for Praktisk Medicin, Ny Raekke|February 20, 1997
[Occurrence of asthma among school children in Norway during the period 1985-94]W Nystad, P Magnus, V SøysethInternational Journal of Epidemiology|December 22, 1999
Day care attendance, recurrent respiratory tract infections and asthmaW Nystad, A Skrondal, P MagnusTidsskrift for Den Norske Laegeforening : Tidsskrift for Praktisk Medicin, Ny Raekke|March 13, 2001
[Day care centers, infections and asthma]W Nystad, A Skrondal, P MagnusEuropean Journal of Epidemiology|July 15, 1998
Increasing risk of asthma without other atopic diseases in school children: a repeated cross-sectional study after 13 yearsW Nystad, P Magnus, A GulsvikPageof 51