The molecular basis of susceptibility to rheumatoid arthritis: the conformational equivalence hypothesis.Winchester, Gregersen1988Tijdschriftartikel
Disability assessment in population surveys: results of the O.E.C.D. Common Development Effort.McWhinnie1981Tijdschriftartikel
Physical activity, exercise, and physical fitness: definitions and distinctions for health-related researchCaspersen, K.E. Powell, Christenson1985 Mar-AprTijdschriftartikel
Epidemiology of community-acquired respiratory tract infections in adults. Incidence, etiology, and impact.Garibaldi1985 Jun 28Tijdschriftartikel
