PT - JOURNAL ARTICLE AU - Houlihan, P. TI - As competition increases, so should MD's marketing efforts DP - 1989 Mar 01 TA - Canadian Medical Association Journal PG - 547--547 VI - 140 IP - 5 4099 - http://www.cmaj.ca/content/140/5/547.short 4100 - http://www.cmaj.ca/content/140/5/547.full SO - CMAJ1989 Mar 01; 140