@base . a , ; "Socioeconomic characteristics of medical practice" . a ; . a . a ; "0742-2709" ; . a ; "0742-2709" ; . a ; ; "20050921180700.0"^^ ; ; . "Illinois" . a , , ; , , ; "Socioeconomic characteristics of medical practice." ; ; ; "0742-2709" ; ; "0742-2709" ; ; "0742-2709" ; "Socioeconomic characteristics of medical practice." , "Socioeconomic characteristics of medical practice" ; . .