Habitual coffee consumption poorly correlates with sleep quality and daytime sleepiness: A cross-sectional study - Simon Söderholm; Martin Ulander; Vanessa William Toma; Sara Kaufmann; Xiangyu Qiao; Daniel Berglind; Susanna Calling; Bledar Daka; Ludger Grote; Mats Martinell; Frida Bergman; Pontus Henriksson; et al. (PLoS ONE, 2026)