TY - JOUR T1 - QUestions and answers Y1 - 1959/05/02 N1 - 10.1001/jama.1959.03010010139037 JO - Journal of the American Medical Association SP - 137 EP - 142 VL - 170 IS - 1 N2 - SN - 0002-9955 M3 - doi: 10.1001/jama.1959.03010010139037 UR - http://dx.doi.org/10.1001/jama.1959.03010010139037 ER -