1. Nanostructural investigation of frontalis sling biomaterial surfaces;Choi;Scanning,2011
2. Repair of ptosis using frontalis muscle and fascia;Crawford;Transactions of the American Academy of Ophthalmology and Otolaryngology,1956
3. Ptosis: is it correctable, and how?;Crawford;Annals of Ophthalmology,1971
4. GRADE Working Group, McMaster University GRADEpro GDT 2014
5. Incidence and demographics of childhood ptosis;Griepentrog;Ophthalmology,2011