Different effects of an oral anticholinergic drug on gastroesophageal reflux in upright and supine position in normal, ambulant subjects: a pilot study.
Different effects of an oral anticholinergic drug on gastroesophageal reflux in upright and supine position in normal, ambulant subjects: a pilot study. Am J Gastroenterol. 1999 Apr; 94(4):925-30.