PT - JOURNAL ARTICLE AU - N. B. Hershfield TI - Herbal medicine: Show me the proof! DP - 1998 Jun 30 TA - Canadian Medical Association Journal PG - 1689--1690 VI - 158 IP - 13 4099 - http://www.cmaj.ca/content/158/13/1689.3.short 4100 - http://www.cmaj.ca/content/158/13/1689.3.full SO - CMAJ1998 Jun 30; 158