Received: 10 July 2020
Accepted: 22 November 2020
First Online: 30 November 2020
Ethics approval and consent to participate
: Not applicable. A retrospective observational chart review study of this type requires no approval from the IRB of the authors’ institutions, in accordance with Taiwanese national regulations. All data is in a closed databank maintained by the PCC-Taiwan. No administrative approvals are required for the staff of PCC-Taiwan to access this closed databank.
: Not applicable.
: AHH is a paid consultant for Laboratoire Prevor, Valmondois, France, manufacturer of Diphoterine® solution. JFD is a part time consultant for Prevor. No potential conflict of interest was reported by any of the other coauthors.