| Rob McCarney The Hawthorne Effect: a randomised, controlled trialRob McCarney Department of Psychological Medicine, Imperial College London, UK BMC Med Res Methodol 7:30. 2007 Ginkgo biloba for mild to moderate dementia in a community setting: a pragmatic, randomised, parallel-group, double-blind, placebo-controlled trialRob McCarney Department of Psychological Medicine, Imperial College London, UK Int J Geriatr Psychiatry 23:1222-30. 2008 Acupuncture for chronic headache in primary care: large, pragmatic, randomised trialAndrew J Vickers Integrative Medicine Service, Biostatistics Service, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, NY, NY 10021, USA BMJ 328:744. 2004 Cost effectiveness analysis of a randomised trial of acupuncture for chronic headache in primary careDavid Wonderling Health Services Research Unit, London School of Hygiene and Tropical Medicine, London WC1E 7HT BMJ 328:747. 2004 Effectiveness gaps: a new concept for evaluating health service and research needs applied to complementary and alternative medicinePeter Fisher Royal London Homoeopathic Hospital, London, UK J Altern Complement Med 10:627-32. 2004 Evaluation of specific and non-specific effects in homeopathy: feasibility study for a randomised trialPeter Fisher Royal London Homoeopathic Hospital, London, UK Homeopathy 95:215-22. 2006
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