Published on in Vol 6, No 2 (2020): Apr-Jun
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/18821, first published
.
1 Department of Emergency and Disaster Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
2 Obstetrics & Gynecology, Yodogawa Christian Hospital, Osaka, Japan
*all authors contributed equally