RT Journal Article SR Electronic T1 BAY 2253651 for the treatment of obstructive sleep apnea: a multi-center, double-blind, randomized controlled trial (SANDMAN) JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 2101937 DO 10.1183/13993003.01937-2021 A1 Gaisl, Thomas A1 Turnbull, Chris D. A1 Weimann, Gerrit A1 Unger, Sigrun A1 Finger, Rudolf A1 Xing, Charles A1 Cistulli, Peter A. A1 West, Sophie A1 Chiang, Alan K.I. A1 Eckert, Danny J. A1 Stradling, John R. A1 Kohler, Malcolm YR 2021 UL http://erj.ersjournals.com/content/early/2021/08/26/13993003.01937-2021.abstract AB