title: [A survey on the members of volunteer groups in the metropolitan area].
mesh_terms: D000328:Adult; D000368:Aged; D000436:Alcoholics Anonymous; D000437:Alcoholism / Q000517:prevention & control*; D005260:Female; D006801:Humans; D007564:Japan; D008297:Male; D008875:Middle Aged; D012657:Self-Help Groups