Affiliation: | (1) Department of Laboratory Medicine and Pathology, Biochemical Genetics Laboratory, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA;(2) Department of Neurology, Mayo Clinic, Rochester, MN, USA;(3) Department of Medical Genetics, Mayo Clinic, Rochester, MN, USA;(4) Department of Pediatric and Adolescent Medicine, Mayo Clinic, Rochester, MN, USA;(5) Metabolic Unit, Department of Clinical Chemistry, VU University Medical Center, Amsterdam, The Netherlands |