胃食管反流病 脾虚气滞型 痰气郁阻型 胃热气逆型 中虚气逆型 肝郁气滞型 gastroesophageal reflux disease spleen deficiency and qi stagnation depression and blockage of phlegm qi adverse qi flow due to stomach heat adverse qi flow due to deficient middle energizer liver depression and qi stagnation