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Article History

Received: 19 May 2018

Accepted: 19 June 2018

First Online: 30 June 2018

Ethics approval and consent to participate

: Each study site was granted approval by the respective hospital’s ethics committee. Prior to enrolment, investigators provided patients with information about the study, and written, informed consent was obtained from all patients prior to any study-related activities. The study was performed in compliance with the principles of Good Clinical Practice, and was designed and conducted in accordance with the principles of the Declaration of Helsinki.

: Not applicable.

: The authors declare that they have no competing interests.