title: Methylmalonic acid and homocysteine assessment in the detection of vitamin B12 deficiency in patients with bilateral visual loss - authors' reply.
authors.affiliation: Department of Ophthalmology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands.
authors.forename: Jan Willem R
authors.initials: JW
authors.lastname: Pott
mesh_terms: D005260:Female; D006710:Homocysteine / Q000097:blood*; D006801:Humans; D008297:Male; D008764:Methylmalonic Acid / Q000097:blood*; D014806:Vitamin B 12 Deficiency / Q000175:diagnosis*
chemical_list: D006710:Homocysteine; D008764:Methylmalonic Acid