TI - CUrrent comment PT - JOUR DP - 1939 TA - Journal of the American Medical Association pages = {1232-1233}, VI - 113 IP - 13 AID - 10.1001/jama.1939.02800380050018 [doi] 4100 - http://dx.doi.org/10.1001/jama.1939.02800380050018 SO - Journal of the American Medical Association September 23, 1939 113(13):1232