Inthavong, Sathaphone
Pantasri, Tawiwan
Morakote, Nuntana
Muangmool, Tanarat
Piyamongkol, Wirawit
Pongsatha, Saipin
Chaovisitseree, Somsak
Article History
Received: 19 January 2022
Accepted: 23 May 2022
First Online: 7 June 2022
Declarations
:
: This study was approved by the Ethics Committee of the Faculty of Medicine, Chiang Mai University (OBG-2562-06406)<b>.</b> All of the methods were carried out in accordance with relevant guidelines and regulations. Informed consent was not obtained, because this was a retrospective study. Furthermore, this research did not involve the use of identifiable private information, and informed consent was waived by the Ethics Committee of the Faculty of Medicine, Chiang Mai University (OBG-2562-06406).
: Not applicable.
: The authors declare no competing interests.