Relationship between positional obstructive sleep apnea and excessive daytime sleepiness in patients with atrial fibrillation - Xiaoyue Liu; Patrick Stafford; Kenneth Bilchick; Sula Mazimba; Jeongok Logan; Yeilim Cho; Paras Patel; McCall Walker; William Healy; Younghoon Kwon (Sleep and Biological Rhythms, 2026)