title: Response.
authors: National Institute of Health Research Respiratory Biomedical Research Unit, National Heart and Lung Institute, Royal Brompton Hospital, Imperial College, London, England; Academic Unit of Sleep and Ventilation, National Heart and Lung Institute, Royal Brompton Hospital, Imperial College, London, England; Department of Cardiology, Heart Hospital, London, England.
authors: Zarrin F
authors: ZF
authors: Shaikh
authors: National Institute of Health Research Respiratory Biomedical Research Unit, National Heart and Lung Institute, Royal Brompton Hospital, Imperial College, London, England.
authors: Michael I
authors: MI
authors: Polkey
authors: Department of Cardiology, Heart Hospital, London, England.
authors: Michael J
authors: MJ
authors: Mullen
authors: Academic Unit of Sleep and Ventilation, National Heart and Lung Institute, Royal Brompton Hospital, Imperial College, London, England. Electronic address: m.morrell@imperial.ac.uk.
authors: Mary J
authors: MJ
authors: Morrell
mesh_terms: D005260:Female; D054092:Foramen Ovale, Patent; D006801:Humans; D008297:Male; D020181:Sleep Apnea, Obstructive