Relevance of spirituality and perceived social support to mental health of people with pre-existing mental health disorders during the COVID-19 pandemic: a longitudinal investigation. - Tutzer F; Schurr T; Frajo-Apor B; Pardeller S; Plattner B; Schmit A; Conca A; Fronthaler M; Haring C; Holzner B; Huber M; Marksteiner J; et al. (Social psychiatry and psychiatric epidemiology, 2024)