1. Prescription, over-the-counter, and herbal medicine use in a rural, obstetric population;Glover;Am J Obstet Gynecol,2003
2. US Census Bureau. West Virginia census quickfacts, 2000. Available from: http://quickfacts.census.gov/qfd/states/54000.html. Accessed June 2003.
3. Self-treatment with herbal and other plant-derived remedies: rural Mississippi;MMWR Morb Mortal Wkly Rep,1995
4. Prevalence of the use of herbal products in a low-income population;Planta;Fam Med,2000
5. Cancer clinical trials and subject use of natural herbal products;Sparber;Cancer Invest,2000