GNAS adult 2 case report 2 female 2 human 2 stimulatory guanine nucleotide binding protein 2 Adult 1 Albright hereditary osteodystrophy 1 Albright syndrome 1 Article 1 Chromogranins 1 DNA Methylation 1 DNA methylation 1 Diseases in Twins 1 Female 1 G protein 1 G protein coupled receptor 1 GNAS protein, human 1 GPCR 1 GTP-Binding Protein alpha Subunits, Gs 1 Genomic Imprinting 1 Heterodisomy 1 Humans 1 Hypocalcemia 1 Imprinting disorder 1 Monozygotic twins 1 Pedigree 1 Pseudohypoparathyroidism 1 Sporadic pseudohypoparathyroidism 1B 1 Twins, Monozygotic 1