An Evidence-Based Systematic Review of Echinacea (E. angustifolia DC, E. pallida, E. purpurea) by the Natural Standard Research Collaboration

Ethan Basch is affiliated with Memorial Sloan Kettering Cancer Center; Catherine Ulbricht is affiliated with Massachusetts General Hospital; Samuel Basch is affiliated with Mt. Sinai Medical Center, NY; Sean Dalton; Edzard Ernst is affiliated with University of Exeter; Ivo Foppa is affiliated with Harvard University; Philippe Szapary is affiliated with University of Pennsylvania; Natasha Tiffany is affiliated with Harvard Medical School; Carolyn Williams Orlando; Mamta Vora is affiliated with Northeastern University. Natural Standard (www.naturalstandard.com) Copyright © 2005. Reprinted with permission.