영문초록
Comparative study of 2 different questionnaires in Japanese patients: the quality of life and utility evaluation survey technology questionnaire (QUEST) versus the frequency scale for the symptoms of gastroesophageal reflux disease questionnaire (FSSG) Nonaka T, Kessoku T, Ogawa Y, et al (J Neurogastroenterol Motil 2013; 19:54-60).