作者单位:King Saud Univ, Coll Dent, Riyadh, Saudi Arabia[1]Integrated Gulf Biosyst, Riyadh, Saudi Arabia[2]King Saud Univ, Coll Med, Genet & Biotechnol Dept, Strateg Ctr Diabet Res, Riyadh, Saudi Arabia[3]KACST, Saudi Human Genome Project, Riyadh, Saudi Arabia[4]