Cho, Myung Hyun https://orcid.org/0000-0002-3237-3173
Ahn, Yo Han https://orcid.org/0000-0002-8185-4408
Lim, Seon hee https://orcid.org/0000-0001-8327-7002
Kim, Ji Hyun https://orcid.org/0000-0001-8477-0157
Ha, Il-Soo https://orcid.org/0000-0001-5428-6209
Cheong, Hae Il https://orcid.org/0000-0001-7556-1265
Kang, Hee Gyung https://orcid.org/0000-0001-8323-5320
Article History
Received: 25 March 2020
Revised: 1 June 2020
Accepted: 3 June 2020
First Online: 20 June 2020
Compliance with ethical standards
: The study was approved by the Seoul Nation University Hospital institutional review board (H-1711-012-895). Due to the characteristics of the study, informed consent from the patients was waived.
: The authors declare that they have no conflict of interest.