TI - ON the contributions of hugh owen thomas of liverpool, sir robert jones of liverpool and london, john ridlon, m.d., of new york and chicago to modern orthopedic surgery PT - JOUR DP - 1949 TA - Journal of the American Medical Association pages = {233}, VI - 141 IP - 3 AID - 10.1001/jama.1949.02910030063029 [doi] 4100 - http://dx.doi.org/10.1001/jama.1949.02910030063029 SO - Journal of the American Medical Association September 17, 1949 141(3):233