{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,15]],"date-time":"2026-09-15T04:43:50Z","timestamp":1789447430208,"version":"build-2803163510"},"reference-count":16,"publisher":"SLACK, Inc.","issue":"4","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Pediatr Ann"],"published-print":{"date-parts":[[2012,4]]},"abstract":"<jats:p>Vitamin D deficiency is not a rare disorder, particularly in minority groups. The Institute of Medicine recommends serum 25-hydroxyvitamin (OH)D levels &gt;20 ng\/mL and The Endocrine Society recommends levels &gt;30 ng\/mL for good health. In contrast, the 2003\u20132006 National Health and Nutrition Examination Survey reported average total 25-(OH)D concentrations of 25.6 \u00b1 0.4 ng\/mL in whites, 19.5 \u00b1 0.5 ng\/mL in Mexican Americans, and 14.8 \u00b1 0.4 ng\/mL in blacks. Pediatric patients with vitamin D deficiency may be asymptomatic or may present either with rickets, hypocalcemia, or seizures.<\/jats:p>\n          <jats:p>Pseudohypoparathyroidism (PHP) is a rare disorder characterized by parathyroid hormone (PTH) resistance with (type 1a) or without (type 1b) the Albright Hereditary Os-teodystrophy (AHO) phenotype of short stature, brachydactyly, and mental retardation. Patients with PHP have elevated PTH levels and may have hyperphosphatemia and hypocalcemia. However, the same laboratory values can be seen in children with vitamin D deficiency, and diagnostic confusion is common. We report two cases of vitamin D deficiency with presentations suggestive of PHP.<\/jats:p>","DOI":"10.3928\/00904481-20120307-10","type":"journal-article","created":{"date-parts":[[2012,4,11]],"date-time":"2012-04-11T18:46:13Z","timestamp":1334169973000},"source":"Crossref","is-referenced-by-count":6,"title":["Two Teenage Males with Hypocalcemia and Elevated Parathyroid Hormone Levels"],"prefix":"10.3928","volume":"41","author":[{"given":"Ashley H.","family":"Shoemaker","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrew A.","family":"Bremer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2308","reference":[{"key":"e_1_3_1_2_2","volume-title":"Dietary Reference Intakes for Calcium and Vitamin D","author":"Institute of Medicine (US) Committee to Review Dietary Reference Intakes for Vitamin D and Calcium","year":"2011","unstructured":"Institute of Medicine (US) Committee to Review Dietary Reference Intakes for Vitamin D and Calcium. Ross AC, Taylor CL, Yaktine AL, Del Valle HB, eds. Dietary Reference Intakes for Calcium and Vitamin D. Washington DC: National Academies Press; 2011. Available at: www.ncbi.nlm.nih.gov\/pubmed\/21796828. 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