Ulstein, S., Årøen, A., Engebretsen, L., Forssblad, M., Lygre, S. H. L., & Røtterud, J. H. (2018). A Controlled Comparison of Microfracture, Debridement, and No Treatment of Concomitant Full-Thickness Cartilage Lesions in Anterior Cruciate Ligament–Reconstructed Knees: A Nationwide Prospective Cohort Study From Norway and Sweden of 368 Patients With 5-Year Follow-up. Orthop J Sports Med.

Ulstein, Svend, Asbjørn Årøen, Lars Engebretsen, Magnus Forssblad, Stein Håkon Låstad Lygre, και Jan Harald Røtterud. "A Controlled Comparison of Microfracture, Debridement, and No Treatment of Concomitant Full-Thickness Cartilage Lesions in Anterior Cruciate Ligament–Reconstructed Knees: A Nationwide Prospective Cohort Study From Norway and Sweden of 368 Patients With 5-Year Follow-up." Orthop J Sports Med 2018.

Ulstein, Svend, et al. "A Controlled Comparison of Microfracture, Debridement, and No Treatment of Concomitant Full-Thickness Cartilage Lesions in Anterior Cruciate Ligament–Reconstructed Knees: A Nationwide Prospective Cohort Study From Norway and Sweden of 368 Patients With 5-Year Follow-up." Orthop J Sports Med 2018.