TY - JOUR T1 - MEdicine at work Y1 - 1959/01/31 N1 - 10.1001/jama.1959.03000220065012 JO - Journal of the American Medical Association SP - 485 EP - 495 VL - 169 IS - 5 N2 - SN - 0002-9955 M3 - doi: 10.1001/jama.1959.03000220065012 UR - http://dx.doi.org/10.1001/jama.1959.03000220065012 ER -