References
  • Am Fam Physician. 2005;72:623.[PMID:16127951]
  • Lancet. 2003 Aug 9;362(9382):459-68. [PMID:12927435]
  • Eur Rev Med Pharmacol Sci. 2009 Sep-Oct;13(5):341-9. [PMID:19961039]
  • Exp Clin Endocrinol Diabetes. 1998;106 Suppl 4:S29-33. [PMID:9867193]
  • Horm Res. 1996;45(3-5):142-7. [PMID:8964573]
  • Am Fam Physician. 2005;72:1517.[PMID:16273818]
  • Clin Chem. 2005;51:1480. [PMID:15961550]
  • Eur J Endocrinol. 2006;154:633. [PMID:16645008]
  • Alan Wu. Tietz Clinical Guide to Laboratory Tests, Fourth Edition. Saunders; 4 edition (June 13, 2006). ISBN-10: 0721679757