Data collection
Institutional review board
approval was not required for this observational study using anonymized
patient data in the JADER database, which is freely available to the
public. Data recorded from April 2004 to May 2021 were downloaded from
the Pharmaceuticals and Medical Devices Agency website
(http://www.pmda.go.jp/) on
October 3, 2021. Two authors (K.K. and S.M.) independently collected and
collated the data.