Heathers, James A J Homeopathy and heart rate variability: concerns and issues. [electronic resource] - Journal of alternative and complementary medicine (New York, N.Y.) Dec 2011 - 1095 p. digital Publication Type: Letter; Comment ISSN: 1557-7708 Standard No.: 10.1089/acm.2011.0581 doi Subjects--Topical Terms: Autonomic Nervous System--drug effectsCoronary Circulation--drug effectsHeart--drug effectsHeart Rate--drug effectsHomeopathyHumansMateria Medica--pharmacologyPlacebo EffectPlacebosResearch Design