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.