title: [On-going national collaborative studies in Czechoslovakia].
mesh_terms: D000328:Adult; D002986:Clinical Trials as Topic; D003604:Czechoslovakia; D006801:Humans; D008875:Middle Aged; D011600:Psychopharmacology; D012106:Research; D014149:Tranquilizing Agents / Q000627:therapeutic use
chemical_list: D014149:Tranquilizing Agents