Authors: Mario F Fraga; Esteban Ballestar; Maria F Paz; Santiago Ropero; Fernando Setien; Maria L Ballestar; Damia Heine-Suñer; Juan C Cigudosa; Miguel Urioste; Javier Benitez; Manuel Boix-Chornet; Abel Sanchez-Aguilera; Charlotte Ling; Emma Carlsson; Pernille Poulsen; Allan Vaag; Zarko Stephan; Tim D Spector; Yue-Zhong Wu; Christoph Plass; Manel Esteller Journal: Proc Natl Acad Sci U S A Date: 2005-07-11 Impact factor: 11.205