Tiotropium respimat versus HandiHaler to improve sleeping oxygen saturation and sleep quality in COPD
Izolde Bouloukaki, Katerina Giannadaki, Charalampos Mermigkis, Stylianos Michelakis, Eleni Mauroudi, Violeta Moniaki, Nikolaos Siafakas, Sophia Schiza
European Respiratory Journal 2014 44: P3280; DOI: