TI - BElgium PT - JOUR DP - 1931 TA - Journal of the American Medical Association pages = {1240-1241}, VI - 97 IP - 17 AID - 10.1001/jama.1931.02730170052026 [doi] 4100 - http://dx.doi.org/10.1001/jama.1931.02730170052026 SO - Journal of the American Medical Association October 24, 1931 97(17):1240