Effect of platelet-rich plasma on the biologic activity of the human rotator-cuff fibroblasts: A controlled in vitro study - Sadoghi, P; Lohberger, B; Aigner, B; Kaltenegger, H; Friesenbichler, J; Wolf, M; Sununu, T; Leithner, A; Vavken, P (J Orthop Res, 2013)