title: Use of laboratory testing to guide 6-mercaptopurine/azathioprine therapy.
authors.affiliation: University of Pennsylvania School of Medicine, Philadelphia, PA 19104, USA. grl@uphs.upenn.edu
authors.forename: Gary R
authors.initials: GR
authors.lastname: Lichtenstein
mesh_terms: D000963:Antimetabolites / Q000627:therapeutic use*; D001379:Azathioprine; D003424:Crohn Disease / Q000097:blood / Q000188:drug therapy*; D006403:Hematologic Tests; D006801:Humans; D007958:Leukocyte Count; D015122:Mercaptopurine / Q000627:therapeutic use*
chemical_list: D000963:Antimetabolites; D015122:Mercaptopurine; D001379:Azathioprine