Arakawa, Akio An investigation of factors contributing to higher levels of placebo response in clinical trials in neuropathic pain: a systematic review and meta-analysis. [electronic resource] - Clinical drug investigation Feb 2015 - 67-81 p. digital Publication Type: Journal Article; Meta-Analysis; Review; Systematic Review ISSN: 1179-1918 Standard No.: 10.1007/s40261-014-0259-1 doi Subjects--Topical Terms: Analgesics--therapeutic useClinical Trials as TopicDouble-Blind MethodHumansNeuralgia--drug therapyPlacebos