Fig. 2From: Efficacy and safety of Zihua Wenfei granules in treatment of postinfectious cough (wind-cold invading lungs syndrome): study protocol for a randomized controlled trialSchedule of study procedures. BPT, bronchial provocation test; CQLQ, cough-specific quality of life questionnaire; FeNO, fractional exhaled nitric oxide; PFT, pulmonary function test; TCM, traditional Chinese medicine; VAS, visual analog scale; ZHWFG, Zihua Wenfei granuleBack to article page