Prevalence of pterygium in a population in Northern Japan: the Locomotive Syndrome and Health Outcome in Aizu Cohort Study.
Tano T, Ono K, Hiratsuka Y, Otani K, Sekiguchi M, Konno S, Kikuchi S, Onishi Y, Takegami M, Yamada M, et al. Acta Ophthalmol. 2013 May; 91(3):e232-6. Epub 2013 Apr 1.