title: Comment on: Pharmacokinetics of Tramadol and O-Desmethyltramadol Enantiomers Following Administration of Extended-Release Tablets to Elderly and Young Subjects.
authors.affiliation: Neonatal Intensive Care Unit, University Hospitals Leuven, Herestraat 49, 3000, Louvain, Belgium. karel.allegaert@uzleuven.be.|Department of Development and Regeneration, KU Leuven, Louvain, Belgium. karel.allegaert@uzleuven.be.
authors.forename: Karel
authors.initials: K
authors.lastname: Allegaert