title: Visual vignette.
authors.affiliation: Department of Internal Medicine, Division of Endocrinology, UT Southwestern Medical Center, Dallas, Texas.
authors.forename: Mariana E
authors.initials: ME
authors.lastname: Marin
authors.affiliation: Department of Internal Medicine, Division of Mineral Metabolism, UT Southwestern Medical Center, Dallas, Texas.
authors.forename: Bridget P
authors.initials: BP
authors.lastname: Sinnott