RT Journal Article SR Electronic T1 CYP24A1 mutations and hypervitaminosis D JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 92 OP 93 DO 10.7861/clinmedicine.19-1-92a VO 19 IS 1 A1 Jamie Willows A1 John A Sayer YR 2019 UL http://www.rcpjournals.org/content/19/1/92.2.abstract