Horton JC, Harsh GR, Fisher JW, Hoyt WF. Von Hippel-Lindau disease and erythrocytosis: radioimmunoassay of erythropoietin in cyst fluid from a brainstem hemangioblastoma. Neurology. 1991 May; 41(5):753-4.
Horton JC, Harsh GR, Fisher JW, Hoyt WF