Martha Jaimes, Arturo Ramirez-Miranda, Enrique O Graue-Hernández, Alejandro Navas, Department of Cornea and Refractive Surgery, Institute of Ophthalmology “Conde de Valenciana”, 06800 Mexico City, Mexico
Author contributions: All the authors fulfill the Vancouver definition of authorship; Jaimes M and Navas A contributed to conception and design, drafting the article and final approved of the version to be published; Ramirez-Miranda A and Graue-Hernández EO contributed to acquisition of data, revising the article for important intellectual content and final approved of the version to be published.
Correspondence to: Alejandro Navas, MD, MSc, Department of Cornea and Refractive Surgery, Institute of Ophthalmology “Conde de Valenciana”, Chimalpopoca 14, Col Obrera, 06800 Mexico City, Mexico. firstname.lastname@example.org
Telephone: +52-55-54421700 Fax: +52-55- 55789748
Received: June 29, 2013
Revised: August 10, 2013
Accepted: August 11, 2013
Published online: August 12, 2013