1. Mansfield DR, Gollogly NC, Kaye DM, Richardson M, et al. (2004). Controlled trial of continuous positive airway pressure in obstructive sleep apnea and heart failure. American Journal of Respiratory and Critical Care Medicine 169(3):361-6.
2. Gowans SE, deHueck A, Voss S, Richardson M. (1999). A randomized, controlled trial of exercise and education for individuals with fibromyalgia. Arthritis Care and Research 12(2):120-8.