TI - THe growth of medical group practice PT - JOUR DP - 1949 TA - Journal of the American Medical Association pages = {478}, VI - 140 IP - 5 AID - 10.1001/jama.1949.02900400032010 [doi] 4100 - http://dx.doi.org/10.1001/jama.1949.02900400032010 SO - Journal of the American Medical Association June 4, 1949 140(5):478