Disclosures and Declarations Authorship.
Both authors meet the ICMJE criteria for authorship.
Competing interests.
Authors declare no competing interests.
Funding.
Study was funded by the Zagreb University School of Medicine
Ethics
approval.
This study used anonymized administrative data standardly
collected on routine procedures, hence ethical approval was waived by
the Ethics Committee of the Zagreb University School of Medicine and
Croatian Institute for Public Healthy.
Author contributions.
Vladimir
Trkulja and Ivan Kodvanj designed the study, prepared and analyzed the
data, drafted the manuscript and completed the final version.
Acknowledgments.
Computing was done on high-throughput computing resources (HTC Cloud)
provided by the University of Zagreb Computing Centre (SRCE). We are
thankful to all the personnel at the Croatian Institute for Public
Health (CIPH) for preparing the raw data, and especially for the kind
support of Tamara Poljičanin MD, PhD, who supervised data preparation
process at CIPH.
Data availability.
Data can be obtained upon a reasonable request from the corresponding author or directly from the CIPH.