Digital Health Competence and Attitudes Toward AI Among Health Care Professionals: Convergent Mixed Methods Study - Segundo Jimenez-Garcia; Manuela Domingo-Pozo; Jose Garcia-Rodriguez; David Tomás; David Ortiz-Perez; Kristina Mikkonen; Erika Jarva; M Flores Vizcaya-Moreno (Journal of Medical Internet Research, 2026)