title: Effects of structure of marathon group therapy and locus of control of therapeutic outcome.
mesh_terms: D005260:Female; D006801:Humans; D007389:Internal-External Control; D009629:Person-Centered Psychotherapy; D010551:Personality; D011615:Psychotherapy, Group / Q000379:methods*; D011616:Psychotherapy, Multiple; D012649:Self Concept; D019966:Substance-Related Disorders / Q000628:therapy