TY - JOUR T1 - QUestions and answers Y1 - 1959/06/06 N1 - 10.1001/jama.1959.03010060125040 JO - Journal of the American Medical Association SP - 757 EP - 760 VL - 170 IS - 6 N2 - SN - 0002-9955 M3 - doi: 10.1001/jama.1959.03010060125040 UR - http://dx.doi.org/10.1001/jama.1959.03010060125040 ER -