TY - RPRT TI - A residency-based information system. AU - J W Murphy AU - N W James AU - P A Williams AU - R S Hillman PY - 1990 DO - 10.7326/0003-4819-112-12-961 UR - https://pubmed.ncbi.nlm.nih.gov/2187395/ ID - 2187395 ER -