Sakata, Yukinori
Matsuoka, Toshiyuki
Ohashi, Satoshi
Koga, Tadashi
Toyoda, Tetsumi
Ishii, Mika
Article History
First Online: 7 March 2019
Compliance with Ethical Standards
:
: This study was funded by Eisai Co. Ltd., Tokyo, Japan.
: YS, HT, TM, SO, and MI are/were employees of Eisai Co. Ltd., Tokyo, Japan. TK and TT are employees of Clinical Study Support, Inc., Nagoya, Japan, and were involved in the study based on the contract with Eisai Co. Ltd.
: For this retrospective database study, all data for analysis were extracted from a pre-existing anonymized database. For the usage of de-identified secondary data, ethical approval and informed consent do not apply, according to the Japanese Ethical Guidelines for Medical and Health Research Involving Human Subjects.
: The MDV data that support the findings of this study are available from Medical Data Vision Co., Ltd. (MDV; Tokyo, Japan) upon purchase. Restrictions do apply to the availability of these data, and are thus unavailable to the public. For inquiries on the dataset analyzed in this study, please contact MDV (ExternalRef removed). The PMS data that support the findings of this study are available upon request from the corresponding author, YS. The data are not publicly available due to the absence of consent from the participating institutions.