TY - JOUR T1 - HSOs: Ontario's answer to HMOs? [correction] JF - Canadian Medical Association Journal JO - CMAJ SP - 897a LP - 897 VL - 140 IS - 8 A2 - , Y1 - 1989/04/15 UR - http://www.cmaj.ca/content/140/8/897a.abstract ER -