@article{dbeb54170c364df1b813d85504f918f1,
title = "Administration of tramadol or ibuprofen increases the INR level in patients on warfarin",
keywords = "Aged, Analgesics, Opioid, Anti-Inflammatory Agents, Non-Steroidal, Anticoagulants, Atrial Fibrillation, Back Pain, Drug Interactions, Humans, Ibuprofen, International Normalized Ratio, Male, Tramadol, Warfarin",
author = "Jacob Juel and Pedersen, {Torben Br{\o}chner} and Langfrits, {Christian Sigvald} and Jensen, {Svend Eggert}",
year = "2013",
month = feb,
doi = "10.1007/s00228-012-1325-3",
language = "English",
volume = "69",
pages = "291--292",
journal = "European Journal of Clinical Pharmacology",
issn = "0031-6970",
publisher = "Physica-Verlag",
number = "2",
}