AU - BURNETT CH, Hill C TI - CHanging trends in clinical investigation PT - JOUR DP - 1959 TA - A.M.A. Archives of Internal Medicine pages = {848-850}, VI - 104 IP - 6 AID - 10.1001/archinte.1959.00270120004002 [doi] 4100 - http://dx.doi.org/10.1001/archinte.1959.00270120004002 SO - A.M.A. Archives of Internal Medicine December 1, 1959 104(6):848