Funding for this research was provided by:
Text and Data Mining valid from 2017-08-16
First Online: 16 August 2017
Compliance with Ethical Standards
: The study was fully approved by the ethics committees of the Medical Center – University of Freiburg, Freiburg, Germany, and of the University Hospital Klinikum rechts der Isar, Munich, Germany, and is registered under DRKS00004385 in the DRKS (German Clinical Trials Register). The corresponding author (Marcelo Niglio de Figueiredo) has full control of all primary data and agrees to allow the journal to review the data if requested.
: The authors have no conflict of interests to declare.
: Informed consent was obtained from all individual participants included in the study.