COVID‐19 lockdown consequences on body mass index and perceived fragility related to physical activity: A worldwide cohort study. - Urzeala, Constanta; Duclos, Martine; Chris Ugbolue, Ukadike; Bota, Aura; Berthon, Mickael; Kulik, Keri; Thivel, David; Bagheri, Reza; Gu, Yaodong; Baker, Julien S.; Andant, Nicolas; Pereira, Bruno; et al. (Health Expectations, 2022)