1. Descriptive Designs
2. “National hospital discharge survey: 1998 Summary,” Centers for Disease Control and Prevention http://www.cdc.gov/nchs/products/pubs/pubd/ad/311-320/ad316.htm
3. PS Weintraub “New and old media used to distribute ASA's patient safety message about herbal medications,” ASA Newsletter (July 1999); “What you should know about herbal use and anesthesia,” American Society of Anesthesiologists http://www.asahq/org/PublicEducation/insidherb.html
4. “Trends in alternative medicine use in the United States, 1990-1997: Results of a follow-up national survey,”;Eisenberg;JAMA,Nov 11, 1998