Cohort profile: The ENTWINE iCohort study, a multinational longitudinal web-based study of informal care. - Elayan, Saif; Bei, Eva; Ferraris, Giulia; Fisher, Oliver; Zarzycki, Mikołaj; Angelini, Viola; Ansmann, Lena; Buskens, Erik; Hagedoorn, Mariët; von Kutzleben, Milena; Lamura, Giovanni; Looijmans, Anne; et al. (PLoS ONE, 2024)