Department of Surgery, Massachusetts General Hospital, Boston, MA. Department of Physical Medicine & Rehabilitation, Massachusetts General Hospital, Boston, MA. Shipley Fitness & Wellness Center, Newton-Wellesley Hospital, Newton, MA. Department of Nutrition & Food Services, Massachusetts General Hospital, Boston, MA. Faculty of Kinesiology & Physical Education, University of Toronto, Toronto, Ontario, Canada. Department of Supportive Care, Princess Margaret Cancer Center, Toronto, Ontario, Canada.