Comparison of Gastroesophageal Reflux Disease Symptoms and Proton Pump Inhibitor Response Using Gastroesophageal Reflux Disease Impact Scale Questionnaire

Financial support: This research was supported from the Seoul National University Bundang Hospital Research fund (Grant No. 06-2011-143) and Astrazeneca Korea. Conflicts of interest: None. Author contributions: So Young Jo analyzed data and wrote a manuscript. Nayoung Kim designed this study, filled up the data sheet and supervised preparing manuscript. Ji Hwan Lim collected data. Cheol Min Shin and Young Soo Park made a questionnaire and performed a statistical analysis. Dong Ho Lee and Hyun Chae Jung advised design and supervised preparing manuscript.