1. Department of Pharmaceutical Sciences, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
2. Department of Medicine, University of Tennessee Health Science Center, Memphis, Tennessee 38163, United States
3. GTx, Inc., Memphis, Tennessee 38103, United States
4. School of Medicine, Medical Sciences and Nutrition, Institute of Medical Sciences, University of Aberdeen, Aberdeen AB25 2ZD, Scotland, U.K.