TY - RPRT TI - Joint cartilage regeneration by tissue engineering. AU - M Sittinger AU - C Perka AU - O Schultz AU - T Häupl AU - G R Burmester PY - 1999 DO - 10.1007/s003930050162 UR - https://pubmed.ncbi.nlm.nih.gov/10441839/ ID - 10441839 ER -