TY - JOUR T1 - HSOs: Ontario's answer to HMOs? JF - Canadian Medical Association Journal JO - CMAJ SP - 515 LP - 519 VL - 140 IS - 5 AU - D. J. Weinkauf AU - H. E. Scully Y1 - 1989/03/01 UR - http://www.cmaj.ca/content/140/5/515.abstract ER -