Authors: G C DeLuca; S V Ramagopalan; B M Herrera; D A Dyment; M R Lincoln; A Montpetit; M Pugliatti; M C N Barnardo; N J Risch; A D Sadovnick; M Chao; S Sotgiu; T J Hudson; G C Ebers Journal: Proc Natl Acad Sci U S A Date: 2007-12-17 Impact factor: 11.205