TI - CUrrent comment PT - JOUR DP - 1939 TA - Journal of the American Medical Association pages = {2242}, VI - 113 IP - 25 AID - 10.1001/jama.1939.02800500047014 [doi] 4100 - http://dx.doi.org/10.1001/jama.1939.02800500047014 SO - Journal of the American Medical Association December 16, 1939 113(25):2242