Jawaheer, Lona Endonasal versus external dacryocystorhinostomy for nasolacrimal duct obstruction. [electronic resource] - The Cochrane database of systematic reviews 02 2017 - CD007097 p. digital Publication Type: Journal Article; Meta-Analysis; Research Support, Non-U.S. Gov't; Review; Systematic Review ISSN: 1469-493X Standard No.: 10.1002/14651858.CD007097.pub3 doi Subjects--Topical Terms: Blood Loss, SurgicalDacryocystorhinostomy--adverse effectsHumansLaser Therapy--methodsPostoperative Hemorrhage--etiologyRandomized Controlled Trials as TopicSurgical Wound Infection--etiologyTreatment Failure