title: Response to the letter "Haptoglobin phenotype and Parkinson disease risk" by Delanghe et al.
authors.affiliation: Bastyr University Research Institute, Kenmore, WA, USA. Electronic address: pcostamallen@bastyr.edu.
authors.forename: Paola
authors.initials: P
authors.lastname: Costa-Mallen
authors.affiliation: Veteran Affairs Puget Sound Health Care System, Seattle, WA, USA; Department of Neurology, University of Washington School of Medicine, Seattle, WA, USA.
authors.forename: Cyrus P
authors.initials: CP
authors.lastname: Zabetian
authors.affiliation: Booth Gardner Parkinson's Care Center, Evergreen Health, Kirkland, WA, USA.
authors.forename: Pinky
authors.initials: P
authors.lastname: Agarwal
authors.affiliation: Department of Neurology, University of Washington School of Medicine, Seattle, WA, USA.
authors.forename: Shu-Ching
authors.initials: SC
authors.lastname: Hu
authors.affiliation: Veteran Affairs Puget Sound Health Care System, Seattle, WA, USA.
authors.forename: Dora
authors.initials: D
authors.lastname: Yearout
authors.affiliation: Veteran Affairs Puget Sound Health Care System, Seattle, WA, USA; Department of Neurology, University of Washington School of Medicine, Seattle, WA, USA.
authors.forename: Ali
authors.initials: A
authors.lastname: Samii
authors.affiliation: Lou Ruvo Center for Brain Health, Neurological Institute, Cleveland Clinic, Cleveland, OH, USA.
authors.forename: James B
authors.initials: JB
authors.lastname: Leverenz
authors.affiliation: Virginia Mason Medical Center, Seattle, WA, USA.
authors.forename: John W
authors.initials: JW
authors.lastname: Roberts
authors.affiliation: University of California San Diego, Department of Family & Preventive Medicine, La Jolla, CA, USA.
authors.forename: Harvey
authors.initials: H
authors.lastname: Checkoway
mesh_terms: D005260:Female; D006242:Haptoglobins / Q000235:genetics* / Q000378:metabolism*; D006801:Humans; D007501:Iron / Q000097:blood*; D008297:Male; D010300:Parkinson Disease / Q000097:blood* / Q000235:genetics*; D012907:Smoking / Q000097:blood*
chemical_list: D006242:Haptoglobins; D007501:Iron
keywords: Haptoglobin polymorphism; Heterosis; Parkinson disease