. 2014 Aug 19;9(2):Doc16. doi: 10.3205/dgkh000236
Copyright © 2014 Kutikhin et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by-nc-nd/3.0/). You are free to copy, distribute and transmit the work, provided the original author and source are credited.