Alan J. Hamstra

A sensitive, precise, and convenient method for determination of 1,25-dihydroxyvitamin D in human plasma

John A. Eisman, Alan J. Hamstra, Barbara E. Kream et al. · Archives of Biochemistry and Biophysics · 1976 · 512 citations

Medicine, Bioanalysis, Convenient Method +6

Determination of vitamin D and its metabolites in plasma from normal and anephric man

Richard M. Shepard, Ronald L. Horst, Alan J. Hamstra et al. · Biochemical Journal · 1979 · 369 citations · Full text

Vitamin-D-Dependent Rickets Type II

Marion H. Brooks, Norman H. Bell, Leon Love et al. · New England Journal of Medicine · 1978 · 345 citations

Vitamin Nutrition, Nutrition, Micronutrients +13

Serum 1,25-Dihydroxyvitamin D Levels in Normal Subjects and in Patients with Hereditary Rickets or Bone Disease

Charles R. Scriver, Teresa M. Reade, Hector F. DeLuca et al. · New England Journal of Medicine · 1978 · 241 citations

Bone Disease, Nutrition, Vitamin D2 +13

Absence of Seasonal Variation in Serum Concentrations of 1,25-Dihydroxyvitamin D Despite a Rise in 25-Hydroxyvitamin D in Summer*

Russell W. Chesney, John F. Rosen, Alan J. Hamstra et al. · The Journal of Clinical Endocrinology & Metabolism · 1981 · 155 citations · Full text