RT Journal T1 Platelet-Rich Fibrin Matrix Augmentation Did Not Improve Recovery and Healing More Than Nonaugmented Rotator Cuff Repair JF The Journal of Bone & Joint Surgery JO The Journal of Bone & Joint Surgery YR 2011 FD November 16 VO 93 IS 22 SP 2125 OP 2125 DO 10.2106/JBJS.9322.ebo410 UL http://dx.doi.org/10.2106/JBJS.9322.ebo410 AB