RT Journal Article SR Electronic T1 HSOs: Ontario's answer to HMOs? JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 515 OP 519 VO 140 IS 5 A1 D. J. Weinkauf A1 H. E. Scully YR 1989 UL http://www.cmaj.ca/content/140/5/515.abstract