Randomized controlled trial of intermittent hypoxia in Parkinson's disease: study rationale and protocol. - Janssen Daalen, Jules M.; Meinders, Marjan J.; Mathur, Soania; van Hees, Hieronymus W.H.; Ainslie, Philip N.; Thijssen, Dick H.J.; Bloem, Bastiaan R. (BMC Neurology, 2024)