Does helmet CPAP reduce carotid flow compared to oronasal mask CPAP? A randomized cross-over trial in healthy subjects. - Duca A; Frosio L; Molinero L; Finazzi A; Oppedisano I; Bellazzi C; Nattino G; Signorini F; Bertolini G; Belotti E; Cosentini R (Internal and emergency medicine, 2025)