Oudelaar, B. W., Huis In't Veld, R., Ooms, E. M., Schepers-Bok, R., Nelissen, R.G.H.H., Vochteloo, A. J. H. Efficacy of Adjuvant Application of Platelet-Rich Plasma After Needle Aspiration of Calcific Deposits for the Treatment of Rotator Cuff Calcific Tendinitis: A Double-Blinded, Randomized Controlled Trial With 2-Year Follow-up. American Journal of Sports Medicine 2021; 4: 873-882