Mechica JB, Leite MOR, Mendonca BB, Frazzatto EST, Borelli A, Latronico AC. A Novel Nonsense Mutation in the First Zinc Finger of the Vitamin D Receptor Causing Hereditary 1,25-Dihydroxyvitamin D3-Resistant Rickets. The Journal of Clinical Endocrinology & Metabolism. 1997 Nov;82(11):3892–4. doi: 10.1210/jcem.82.11.4384.