Funding for this research was provided by:
Text and Data Mining valid from 2018-05-23
Received: 4 December 2017
Accepted: 10 May 2018
First Online: 23 May 2018
Ethics approval and consent to participate
: Patients enrolling in the study have given informed consent for observational study. The study was approved by the IRB of the Institute of Tropical Medicine at Nagasaki University and the IRBs of four participating hospitals.
: The authors declare that they have no competing interests.
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