The role of 1 alpha, 25-dihydroxyvitamin D in the mediation of intestinal hyperabsorption of calcium in primary hyperparathyroidism and absorptive hypercalciuria.Roy A. Kaplan, C. Y. C. Pak, Mark R. Haussler et al.|Journal of Clinical Investigation|1977Cited by 296
Propranolol and the treatment of rheumatoid arthritisRoy A. Kaplan, John H. Vaugha, Charles A. Robinson et al.|Arthritis & Rheumatism|1980Cited by 40