Return of sleep apnoea and sleep fragmentation following CPAP withdrawal in patients with obstructive sleep apnoea.

Competing Interests: Conflict of interest: C. Turnbull reports personal fees for consultancy from Bayer, outside the submitted work. Conflict of interest: S. Pattenden has nothing to disclose. Conflict of interest: T. Gaisl reports personal fees from Bayer AG (consultancy), outside the submitted work. Conflict of interest: V. Rossi has nothing to disclose. Conflict of interest: S. Thiel has nothing to disclose. Conflict of interest: M. Kohler reports grants from Swiss National Science Foundation, during the conduct of the study; grants and personal fees from Bayer, outside the submitted work. Conflict of interest: J. Stradling reports grants from Oxford Hospitals Charitable Funds, during the conduct of the study; grants and personal fees from Bayer, personal fees from ResMed UK, outside the submitted work.