Berry G T, Heidenreich R, Kaplan P, Levine F, Mazur A, Palmieri M J, Yudkoff M, Segal S
Division of Biochemical Development and Molecular Diseases, Children's Hospital of Philadelphia, PA 19104.
N Engl J Med. 1991 Jan 17;324(3):175-9. doi: 10.1056/NEJM199101173240307.