Croft DE, van Hemert J, Wykoff CC, Clifton D, Verhoek M, Fleming A, Brown DM. Precise montaging and metric quantification of retinal surface area from ultra-widefield fundus photography and fluorescein angiography. Osli Retina. 2014 Jul 1;45(4):312-7. doi: 10.3928/23258160-20140709-07
Maskey MK, Baral KP, Shah R, Shrestha BD, Lang J, Rothman KJ. Field test results of the motherhood method to measure maternal mortality. Ind Med Gaz. 2011 Jan 1;133(1):64-9.