Association between serum insulin growth factor-I (IGF-I) and a simple sequence repeat in IGF-I gene: implications for genetic studies of bone mineral density. - Rosen,C.J.; Kurland,E.S.; Vereault,D.; Adler,R.A.; Rackoff,P.J.; Craig,W.Y.; Witte,S.; Rogers,J.; Bilezikian,J.P. (J Clin Endocrinol Metab, 1998)