Martin P Hansen, Nina Matheis, George J Kahaly, Department of Medicine I, Johannes Gutenberg University Medical Center, 55131 Mainz, Germany
Author contributions: Hansen MP and Kahaly GJ conceived and designed the study; Hansen MP, Matheis N and Kahaly GJ acquired, analyzed and interpreted the data; Hansen MP and Kahaly GJ drafted the manuscript; Matheis N and Kahaly GJ revised the manuscript; all authors read and approved the final version of the manuscript.
Conflict-of-interest: The corresponding author has nothing to disclose.
Open-Access: This article is an open-access article which was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/
Correspondence to: George J Kahaly, MD, PhD, Department of Medicine I, Johannes Gutenberg University Medical Center, Langenbeckstreet 1, 55131 Mainz, Germany. firstname.lastname@example.org
Telephone: +49-6131-172290 Fax: +49-6131-173460
Received: July 14, 2014
Peer-review started: July 15, 2014
First decision: September 16, 2014
Revised: November 11, 2014
Accepted: November 27, 2014
Article in press: December 1, 2014
Published online: February 15, 2015