TI - MEdical literature abstracts PT - JOUR DP - 1959 TA - Journal of the American Medical Association pages = {1663-1685}, VI - 169 IP - 14 AID - 10.1001/jama.1959.03000310115028 [doi] 4100 - http://dx.doi.org/10.1001/jama.1959.03000310115028 SO - Journal of the American Medical Association April 4, 1959 169(14):1663