title: Reply: To PMID 23333660.
authors.forename: Margien L
authors.initials: ML
authors.lastname: Seinen
authors.forename: Nanne K H
authors.initials: NK
authors.lastname: De Boer
authors.forename: Adriaan A
authors.initials: AA
authors.lastname: van Bodegraven
mesh_terms: D003424:Crohn Disease / Q000188:drug therapy*; D005260:Female; D006801:Humans; D007166:Immunosuppressive Agents / Q000627:therapeutic use*; D008297:Male; D015122:Mercaptopurine / Q000627:therapeutic use*; D008727:Methotrexate / Q000627:therapeutic use*
chemical_list: D007166:Immunosuppressive Agents; D015122:Mercaptopurine; D008727:Methotrexate