The Mediating Role of Occupational Dysfunction in the Recovery Process from Difficulty in Daily Life Among People with Severe and Persistent Mental Illness - Aki Watanabe; Takayuki Kawaguchi; Mai Sakimoto; Yuya Oikawa; Keiichiro Furuya; Taichi Matsuoka; Sosei Yamaguchi (Journal of Psychosocial Rehabilitation and Mental Health, 2026)