title: Mental health volunteers as change agents.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000488:Allied Health Personnel / Q000706:statistics & numerical data; D001290:Attitude; D003156:Community Mental Health Services; D005260:Female; D006280:Health Workforce; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000628:therapy*; D008875:Middle Aged; D010551:Personality; D011613:Psychotherapy; D012107:Research Design; D012179:Retirement; D012917:Social Adjustment; D012923:Social Class; D014838:Volunteers / Q000706:statistics & numerical data*