TI - MEdical literature abstracts PT - JOUR DP - 1959 TA - Journal of the American Medical Association pages = {1720-1749}, VI - 170 IP - 14 AID - 10.1001/jama.1959.03010140100028 [doi] 4100 - http://dx.doi.org/10.1001/jama.1959.03010140100028 SO - Journal of the American Medical Association August 1, 1959 170(14):1720