title: Erratum.
abstract: The article incorrectly stated: "Elevations of both fibroblast growth factor 23 (FGF23) and parathyroid hormone (PTH) lead to hyperphosphatemia and hypocalcemia because of decreased urinary excretion of phosphorus." In fact, FGF23 normally acts to lower blood phosphate levels. Furthermore, an elevated phosphorus level causes an increase in serum calcium levels and not hypocalcemia. This information has been corrected in the online version of the article.
authors.affiliation: The Department of Pharmacotherapy, University of Utah College of Pharmacy, Salt Lake City, UT, USA.
authors.forename: Heather
authors.initials: H
authors.lastname: Nyman
authors.affiliation: The Department of Family and Preventive Medicine, University of Utah School of Medicine, Salt Lake City, UT, USA. Email: karly.pippitt@hsc.utah.edu.
authors.forename: Karly
authors.initials: K
authors.lastname: Pippitt
authors.affiliation: The Department of Pharmacotherapy, University of Utah College of Pharmacy, Salt Lake City, UT, USA.
authors.forename: Alisyn
authors.initials: A
authors.lastname: Hansen
authors.affiliation: The Department of Pharmacotherapy, University of Utah College of Pharmacy and the Department of Family and Preventive Medicine, University of Utah School of Medicine, Salt Lake City, UT, USA.
authors.forename: Karen
authors.initials: K
authors.lastname: Gunning