Physical activity and incidence of non-insulin-dependent diabetes mellitus in women. - Manson,J.E.; Rimm,E.B.; Stampfer,M.J.; Colditz,G.A.; Willett,W.C.; Krolewski,A.S.; Rosner,B.; Hennekens,C.H.; Speizer,F.E. (Lancet, 1991)