Development of a Serious Game App (Digimenz) for Patients With Dementia: Prospective Pilot Study for Usability Testing in Inpatient Treatment and Long-Term Care. - Brähmer SF; Iffland B; Kreisel S; Driessen M; Trompetter EM; Schomburg M; Toepper M; Steuwe C (JMIR serious games, 2025)