Erratum to: Endocr DOI 10.1007/s12020-009-9281-0

Two authors were mistakenly omitted from the original publication. The authors are:

Hakan Boyunaga, MD, Associate Professor, Department of Biochemistry, Kırıkkale Medical Faculty, Turkey (second author) and Levent Kenar, MD, Associate Professor, Department of Medical Cbrn Defense, Gülhane Military Medical Academy, Turkey (seventh author).