Health-related quality of life and cost-of-illness in young people seeking peer support at @ease: A Dutch burden of disease study - Anouk Boonstra; Ghislaine A. P. G. van Mastrigt; Silvia M. A. A. Evers; Sander Osstyn; Remco F. P. de Winter; Nynke Boonstra; Therese A. M. J. van Amelsvoort; Sophie M. J. Leijdesdorff (PLoS ONE, 2026)