Fig. 1From: Clinical efficacy of Yukgunja-tang combined with a proton pump inhibitor for refractory gastroesophageal reflux disease: study protocol for randomized, double-blind, double-dummy clinical trialFlow diagram of the trial. B.i.d: Bis in die; RPZ: Rabeprazole; Sac: Sachet; Tab: Tablet; T.i.d: Ter in die; Q.d: Quaque die; YGJ: Yukgunja-tangBack to article page