Franceschi, F., Ruzzini, L., Longo, U. G., Martina, F. M., Zobel, B. B., Maffulli, N., Denaro, V. Equivalent clinical results of arthroscopic single-row and double-row suture anchor repair for rotator cuff tears: a randomized controlled trial. American Journal of Sports Medicine 2007; 8: 1254-60