KaptchukTJ. The placebo effect in alternative medicine: can the performance of a healing ritual have clinical significance?Ann Intern Med. 2002;136:817-825.
9.
McGrawR. Learning to Laugh at Work: The Power of Humor in the Workplace. Mission, KS: SkillPath Publications; 1995:17-22.
10.
BrodyHMillerFG.Lessons from recent research about the placebo effect—from art to science. JAMA. 2011;306:2612-2613.
11.
PensonRTPartridgeRARuddP. Laughter: the best medicine?Oncologist. 2005;10:651-660.