AU - THOMS H, GOODRICH FW, Jr. TI - TRaining for childbirth PT - JOUR DP - 1949 TA - Journal of the American Medical Association pages = {1256-1258}, VI - 140 IP - 16 AID - 10.1001/jama.1949.02900510006002 [doi] 4100 - http://dx.doi.org/10.1001/jama.1949.02900510006002 SO - Journal of the American Medical Association August 20, 1949 140(16):1256