Younus, Iyan How long is the tail end of the learning curve? Results from 1000 consecutive endoscopic endonasal skull base cases following the initial 200 cases. [electronic resource] - Journal of neurosurgery 03 2021 - 750-760 p. digital Publication Type: Journal Article ISSN: 1933-0693 Standard No.: 10.3171/2019.12.JNS192600 doi Subjects--Topical Terms: AdultAgedCerebrospinal Fluid Leak--epidemiologyClinical CompetenceDatabases, FactualEndoscopy--educationFemaleHumansIntraoperative Complications--epidemiologyLearning CurveMaleMiddle AgedNasal Cavity--surgeryNatural Orifice Endoscopic Surgery--educationNeuroendoscopyNeurosurgical Procedures--educationPostoperative Complications--epidemiologyProspective StudiesSkull Base Neoplasms--pathologySurgical FlapsTreatment Outcome