Author contribution
RECRUITMENT
Christian Wehner, Dino Tur, Gerlinde Durstberger, Markus Laky, Andreas Moritz, and Xiaohui Rausch-Fan designed the study protocol; Markus Laky, Christian Wehner, Dino Tur, and Gerlinde Durstberger were involved in patient recruitment and clinical assessment; Brenda Laky and Oleh Andrukhov performed the statistical analysis. Andreas Moritz contributed to clinical realization of the study. Christian Wehner wrote the article. All authors approved the final manuscript.