1. Traditional Medicine Strategy 2002–2005, World Health Organization, Geneva, 2005, accessible at http://whqlibdoc.who.int/hq/2002/WHO_EDM_TRM_2002.1.pdf (accessed on November 22, 2010).
2. Guidelines for the Assessment of Herbal Medicine, World Health Organization, Munich, Germany, 1991, accessible at Guidelines for the Assessment of Herbal Medicine http://whqlibdoc.who.int/HQ/1991/WHO_TRM_91.4.pdf (accessed on November 22, 2010).
3. Quality control methods for medicinal plant materials, World Health Organization, Geneva, 2005, accessible at http://www.who.int/medicines/services/expertcommittees/pharmprep/QAS05_131Rev1_QCMethods_Med_PlantMaterialsUpdateSept05.pdf (accessed on November 22, 2010).
4. WHO, General Guidelines for Methodologies on Research and Evaluation of Traditional Medicines, Geneva, Switzerland, 2000, accessible at http://apps.who.int/medicinedocs/pdf/whozip42e/whozip42e.pdf (accessed on November 22, 2010).
5. Herbal mixtures in the traditional medicine of Cuba;Cano;J. Ethnopharmacol.,2004