Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) P B Morgan,Incidence of keratitis of varying severity among contact lens wearers,British Journal of Ophthalmology,0007-1161,BMJ,2005-04-01,89,4,430-436,https://cir.nii.ac.jp/crid/1362262943696436608,https://doi.org/10.1136/bjo.2004.052688