Received: 1 December 2021
Accepted: 3 May 2022
First Online: 13 May 2022
: The study was granted ethical approval by the National Center for Health Statistics (NCHS). The study was carried out following the ethical standards of the responsible committee on human experimentation and with the 1975 Helsinki Declaration and its later amendments. Furthermore, written informed consent was received from each subject.
: Not applicable.
: The authors declare that they have no conflicts of interest to disclose, financially or otherwise.