Competing interests
C.A. is Director of Medical and Scientific Affairs of InGeneron, Inc. (Houston, TX, USA). E.U.A. is Executive Chair of InGeneron. C.S. is Advisory Medical Director of InGeneron. However, InGeneron had no role in study design, data collection and analysis, interpretation of the data, and no role in the decision to publish and write this manuscript. No other potential conflicts of interest relevant to this article were reported.