TY - JOUR T1 - MEdical literature abstracts Y1 - 1959/09/12 N1 - 10.1001/jama.1959.03010200110022 JO - Journal of the American Medical Association SP - 242 EP - 245 VL - 171 IS - 2 N2 - SN - 0002-9955 M3 - doi: 10.1001/jama.1959.03010200110022 UR - http://dx.doi.org/10.1001/jama.1959.03010200110022 ER -