TY - RPRT TI - Modified channel retractor simplifies sagittal ramus osteotomy procedure. AU - H A Merten AU - J F Hönig PY - 1998 DO - 10.1097/00001665-199807000-00020 UR - https://pubmed.ncbi.nlm.nih.gov/9780937/ ID - 9780937 ER -