Comment on

• Euthyroid goiter with and without nodules--diagnosis and treatment.

  Führer D, Bockisch A, Schmid KW. Führer D, et al. Dtsch Arztebl Int. 2012 Jul;109(29-30):506-15; quiz 516. doi: 10.3238/arztebl.2012.0506. Epub 2012 Jul 23. Dtsch Arztebl Int. 2012. PMID: 23008749 Free PMC article. Review.
• Correspondence (letter to the editor): A big challenge.

  Mainz A. Mainz A. Dtsch Arztebl Int. 2013 Feb;110(5):68. doi: 10.3238/arztebl.2013.0068a. Epub 2013 Feb 1. Dtsch Arztebl Int. 2013. PMID: 23437025 Free PMC article. No abstract available.
• Correspondence (letter to the editor): Extremely low numbers of cases.

  Abholz HH, Bandeira-Echtler E, Köbberling J. Abholz HH, et al. Dtsch Arztebl Int. 2013 Feb;110(5):68-9. doi: 10.3238/arztebl.2013.0068b. Epub 2013 Feb 1. Dtsch Arztebl Int. 2013. PMID: 23437026 Free PMC article. No abstract available.
• Correspondence (letter to the editor): Poor sensitivity and specificity.

  Egidi G. Egidi G. Dtsch Arztebl Int. 2013 Feb;110(5):69. doi: 10.3238/arztebl.2013.0069a. Epub 2013 Feb 1. Dtsch Arztebl Int. 2013. PMID: 23437027 Free PMC article. No abstract available.
• Correspondence (letter to the editor): Relevance of prevalence values.

  Schübel J, Voigt K, Bergmann A. Schübel J, et al. Dtsch Arztebl Int. 2013 Feb;110(5):69-70. doi: 10.3238/arztebl.2013.0069b. Epub 2013 Feb 1. Dtsch Arztebl Int. 2013. PMID: 23437028 Free PMC article. No abstract available.
• Correspondence (letter to the editor): Questions remain unanswered.

  Laubner P. Laubner P. Dtsch Arztebl Int. 2013 Feb;110(5):70. doi: 10.3238/arztebl.2013.0070a. Epub 2013 Feb 1. Dtsch Arztebl Int. 2013. PMID: 23437029 Free PMC article. No abstract available.
• Correspondence (letter to the editor): Ultrasound-guided percutaneous ethanol injection was not mentioned.

  Braun B. Braun B. Dtsch Arztebl Int. 2013 Feb;110(5):70. doi: 10.3238/arztebl.2013.0070b. Epub 2013 Feb 1. Dtsch Arztebl Int. 2013. PMID: 23437030 Free PMC article. No abstract available.