Harrison's Principles of Internal Medicine. 19th Edition. Edited by Dennis L. Kasper, Anthony S. Fauci, Stephen L. Hauser, Dan L. Longo, J. Larry Jameson, Joseph Loscalzo Chapter 29: Fatigue 2015 https://researcherprofiles.org/profile/1334642 Gelfand, JM. Douglas, VC.
