TI - DEficiency PT - JOUR DP - 1948 TA - Journal of the American Medical Association pages = {1346}, VI - 137 IP - 15 AID - 10.1001/jama.1948.02890490074045 [doi] 4100 - http://dx.doi.org/10.1001/jama.1948.02890490074045 SO - Journal of the American Medical Association August 7, 1948 137(15):1346