https://clinicalepigeneticsjournal.biomedcentral.com/articles/10.1186/s13148-020-00987-2 https://clinicalepigeneticsjournal.biomedcentral.com/articles/10.1186/s13148-020-00984-5 https://clinicalepigeneticsjournal.biomedcentral.com/articles/10.1186/s13148-020-00988-1 https://clinicalepigeneticsjournal.biomedcentral.com/articles/10.1186/s13148-020-00971-w https://clinicalepigeneticsjournal.biomedcentral.com/articles/10.1186/s13148-020-00983-6 https://clinicalepigeneticsjournal.biomedcentral.com/articles/10.1186/s13148-020-00986-3