AU - Vaisrub S TI - PRobing for causes PT - JOUR DP - 1979 TA - Archives of Internal Medicine pages = {397}, VI - 139 IP - 4 AID - 10.1001/archinte.1979.03630410007004 [doi] 4100 - http://dx.doi.org/10.1001/archinte.1979.03630410007004 SO - Archives of Internal Medicine April 1, 1979 139(4):397