The Cooperative Cataract Research Group.
D000818:Animals; D002386:Cataract / Q000209:etiology*; D005060:Europe; D006801:Humans; D007391:International Cooperation; D007564:Japan; D007908:Lens, Crystalline; D012106:Research; D012107:Research Design; D012958:Societies, Scientific; D014481:United States