A randomized controlled trial of a Chinese herbal remedy to increase energy, memory, sexual function, and quality of life in elderly adults in Beijing, China Stephen Bent, MD, Ling Xu, MD, Li-Yung Lui, MA, MS, Michael Nevitt, PhD, Edward Schneider, MD, Guoqing Tian, PhD, Saishan Guo, MD, Steven Cummings, MD, MPH The American Journal of Medicine Volume 115, Issue 6, Pages 441-447 (October 2003) DOI: 10.1016/S0002-9343(03)00421-2
Figure Flowchart showing enrollment and follow-up of study participants. The American Journal of Medicine 2003 115, 441-447DOI: (10.1016/S0002-9343(03)00421-2)