Magnitude and Determinants of Placebo Response in Acute Migraine Trials: A Systematic Review and Meta-Analysis.

Makita LM, Katsuyama E, Christensen RH, Takeshima T, Ashina S, Piovesan EJ, Luna AM, Ueda GN, Antunes VDLJ, Sahin OK, Miguita ALP, Hakkeem B, Fagundes TP, Talah BAD, Peres MFP