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Internal jugular vein occlusion in head and neck microsurgical reconstruction. Ann Plast Surg. 2002; 49 (5): 490-4.","DOI":"10.1097\/00000637-200211000-00008"},{"key":"12","doi-asserted-by":"crossref","unstructured":"12. Han SH, Kim YC, Kwon TK, et al. Cumulative sum analysis of the learning curve of free flap reconstruction in head and neck cancer patients. Clin Exp Otorhinolaryngol. 2022; 15 (2): 177-82.","DOI":"10.21053\/ceo.2021.01053"},{"key":"13","doi-asserted-by":"crossref","unstructured":"13. Atmodiwirjo P, Ramadan MR, Djohan M, et al. Does &quot;the more, the merrier&quot; apply to the free flap learning curve? A ten-year retrospective review from an emerging single institution. Plast Surg (Oakv). 2025; 33: 22925503251322526.","DOI":"10.1177\/22925503251322526"},{"key":"14","unstructured":"14. Ward P, Hodges NJ, Williams AM. Skill acquisition in sport: research. Theory and practice. Williams AM, Hodges NJ, editors. London: Routledge; 2004. 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