title: Serum gamma-glutamyltransferase at screening and retrospective sickness days.
mesh_terms: D000041:Absenteeism; D000437:Alcoholism / Q000201:enzymology; D006801:Humans; D007342:Insurance Benefits; D008297:Male; D008875:Middle Aged; D009017:Morbidity; D009787:Occupational Medicine; D012189:Retrospective Studies; D013548:Sweden; D014505:Urban Population; D005723:gamma-Glutamyltransferase / Q000097:blood*
chemical_list: D005723:gamma-Glutamyltransferase