TI - MEdical news PT - JOUR DP - 1939 TA - Journal of the American Medical Association pages = {1394-1399}, VI - 112 IP - 14 AID - 10.1001/jama.1939.02800140092018 [doi] 4100 - http://dx.doi.org/10.1001/jama.1939.02800140092018 SO - Journal of the American Medical Association April 8, 1939 112(14):1394