Deletion of the Noncoding GNAS Antisense Transcript Causes Pseudohypoparathyroidism Type Ib and Biparental Defects of GNAS Methylation in cis - Chillambhi, S; Turan, S; Hwang, D Y; Chen, H C; Jüppner, H; Bastepe, M (J Clin Endocrinol Metab, 2010)