Acknowledgements
This work was supported by grants IGA of The Ministry of Health: NT11154, NS 10207, NS10406, NS10408, grants of The Ministry of Education, Youth and Sports: LC06027, MSM0021622434, grant of GACR: GAP304/10/1395 and grant of Masaryk University: MUNI/A/1012/2009.
Potential conflict of interest:
Disclosure forms provided by the authors are available with the full text of this article at www.informahealthcare.com/lal.