Authors' reply.
Rome, Italy.
Giuseppe
G
Milano
Maristella F
MF
Saccomanno
D000818:Animals; D054544:Arthroplasty, Subchondral / Q000379:methods*; D001182:Arthroscopy; D002358:Cartilage, Articular / Q000293:injuries*; D005260:Female; D053657:Platelet-Rich Plasma; D013264:Stifle / Q000293:injuries*