Jun, Baek Gyu
Kim, Moonho
Shin, Hwang Sik
Yi, Jee-Jeon
Yi, Sang-Wook http://orcid.org/0000-0002-6656-6205
Article History
Received: 17 December 2021
Revised: 8 February 2022
Accepted: 17 February 2022
First Online: 5 March 2022
Competing interests
: The authors declare no competing interests.
: This study was performed in accordance with the Declaration of Helsinki. This study was approved by the Institutional Review Board of Catholic Kwandong University. Informed consent was waived because the anonymized data were used that was provided by NHIS according to strong confidentiality protocol.
: Not applicable.