Fujiwara Y, Kohata Y, Kaji M, Nebiki H, Yamasaki T, Sasaki E, Hayakawa T, Machida H, Tanigawa T, Watanabe K, Watanabe T, Tominaga K, Arakawa T. Sleep dysfunction in Japanese patients with gastroesophageal reflux disease: prevalence, risk factors, and efficacy of rabeprazole. Digestion. 2010;81(3):135–41. doi: 10.1159/000253849. PMID: 20090330.