TI - MEdical news PT - JOUR DP - 1939 TA - Journal of the American Medical Association pages = {1004-1006}, VI - 112 IP - 10 AID - 10.1001/jama.1939.02800100114015 [doi] 4100 - http://dx.doi.org/10.1001/jama.1939.02800100114015 SO - Journal of the American Medical Association March 11, 1939 112(10):1004