Two HLA Class II Gene Variants Are Independently Associated with Pediatric Osteosarcoma Risk. - Chenan Zhang; Wiemels, Joseph L.; Hansen, Helen M.; Gonzalez-Maya, Julio; Endicott, Alyson A.; de Smith, Adam J.; Smirnov, Ivan V.; Witte, John S.; Morimoto, Libby M.; Metayer, Catherine; Walsh, Kyle M. (Cancer Epidemiology, Biomarkers & Prevention, 2018)