The myth of "21".
Wilson
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MR
D018450:Disease Progression; D005902:Glaucoma, Open-Angle / Q000175:diagnosis / Q000209:etiology / Q000503:physiopathology*; D006801:Humans; D007429:Intraocular Pressure / Q000502:physiology*; D009798:Ocular Hypertension / Q000175:diagnosis / Q000209:etiology / Q000503:physiopathology*; D012307:Risk Factors