A Twin Study on the Relation Between Positive Mental Health and Biological Aging. - Fagnani, Corrado; Picardi, Angelo; Medda, Emanuela; Salemi, Miriam; D'Ippolito, Cristina; Siniscalchi, Ester; Salani, Francesca; Varalda, Giorgia M.; Marcon, Francesca (International Journal of Molecular Sciences, 2026)