End Users' and Other Stakeholders' Needs and Requirements in the Development of a Personalized Integrated Care Platform (PROCare4Life) for Older People With Dementia or Parkinson Disease: Mixed Methods Study. - Ahmed M; Marín M; How D; Judica E; Tropea P; Bentlage E; J Ferreira J; Bouça-Machado R; Brach M (JMIR formative research, 2022)