Effectiveness of a peer-supported crisis intervention to reduce the proportion of compulsory admissions in acute psychiatric crisis interventions in an outreach and outpatient setting: study protocol for an exploratory cluster randomised trial combined with qualitative methods

同伴支持危机干预在降低外展和门诊环境中急性精神危机干预中强制入院比例的有效性：一项探索性整群随机试验结合定性方法的研究方案