Demographic, anthropometric and intrasubject variations affect platelet-rich plasma formulation. - García-Bordes L; Álvarez-Díaz P; Alentorn-Geli E; Ferré-Aniorte A; Laiz-Boada P; Seijas-Vázquez R; Cugat-Bertomeu R (Journal of experimental orthopaedics, 2025)