AU - Knutsen, Gunnar AU - Drogset, Jon Olav AU - Engebretsen, Lars AU - Grøntvedt, Torbjørn AU - Isaksen, Vidar AU - Ludvigsen, Tom C. AU - Roberts, Sally AU - Solheim, Eirik AU - Strand, Torbjørn AU - Johansen, Oddmund TI - A Randomized Trial Comparing Autologous Chondrocyte Implantation with MicrofractureFindings at Five Years PT - JOUR DP - 2007 TA - The Journal of Bone & Joint Surgery PG - 2105-2112 VI - 89 IP - 10 AID - 10.2106/JBJS.G.00003 [doi] 4100 - http://dx.doi.org/10.2106/JBJS.G.00003 SO - The Journal of Bone & Joint Surgery October 1, 2007 89(10):2105