Evaluating the Benefit of Home Support Provider Services for Positive Airway Pressure Therapy in Patients With Obstructive Sleep Apnea: Protocol for an Ambispective International Real-World Study - Sarah Alami; Manuella Schaller; Sylvie Blais; Henry Taupin; Marta Hernández González; Frédéric Gagnadoux; Paula Pinto; Irene Cano-Pumarega; Lieven Bedert; Ben Braithwaite; Hervé Servy; Stéphane Ouary; et al. (JMIR Research Protocols)