Estimating a woman's risk of having a pregnancy associated with Down's syndrome using her age and serum alpha-fetoprotein level.Cuckle, Wald, Thompson1987 MayTijdschriftartikel
The molecular basis of susceptibility to rheumatoid arthritis: the conformational equivalence hypothesis.Winchester, Gregersen1988Tijdschriftartikel
The Tecumseh study of respiratory illness. X. Relation of acute infections to smoking, lung function and chronic symptoms.Monto, Ross1978 JanTijdschriftartikel
ASA physical status classifications: a study of consistency of ratings.Owens, Felts, Spitznagel1978 OctTijdschriftartikel