Kneer, W., Rother, M., Mazgareanu, S., Seidel, E. J., European, Idea-study group A 12-week randomized study of topical therapy with three dosages of ketoprofen in Transfersome gel (IDEA-033) compared with the ketoprofen-free vehicle (TDT 064), in patients with osteoarthritis of the knee. Journal of pain research 2013; 0: 743-53