Facilitating physical activity and reducing symptoms in patients with knee osteoarthritis: study protocol of a randomized controlled trial to test a theory-based PrevOP-psychologic...

by Nina Knoll, Diana Hilda Hohl, Susannah Motter, Jan Keller, Daniela Lange, Dieter Felsenberg, Peter Martus, Wolfgang Ertel, Ralf Schwarzer
Published 2018-07-01