Funding for this research was provided by:
Ministerstvo Zdravotnictví Ceské Republiky (15-27109A)
Univerzita Karlova v Praze (PROGRES Q38/LF1)
Received: 8 July 2019
Accepted: 4 October 2019
First Online: 30 October 2019
Ethics approval and consent to participate
: All participants signed informed consent and the study was approved by the joint ethics committee of the Institute for Clinical and Experimental Medicine and Thomayer Hospital, Prague and was in accordance with the Declaration of Helsinki.
: Not applicable – no individual patient data presented.
: The authors declare that they have no competing interests.