LANZA FL, MARATHI UK, ANAND BS, LICHTENBERGER LM. Clinical trial: comparison of ibuprofen‐phosphatidylcholine and ibuprofen on the gastrointestinal safety and analgesic efficacy in osteoarthritic patients. Aliment Pharmacol Ther. 2008 Jul 23;28(4):431–42. doi: 10.1111/j.1365-2036.2008.03765.x.
Clinical trial: comparison of ibuprofen‐phosphatidylcholine and ibuprofen on the gastrointestinal safety and analgesic efficacy in osteoarthritic patients