Submitted on: 24 April 2013.
Revised on: 24 May 2013.
Accepted on: 19 July 2013.
___________________JAPANESE JOURNAL OF INFECTIOUS DISEASES
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Submitted on: 29 November 2016.
Revised on: 23 March 2017.
Accepted on: 10 April 2017.
___________________JAPANESE JOURNAL OF INFECTIOUS DISEASES
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Submitted on: 27 July 2018.
Revised on: 09 November 2018.
Accepted on: 28 December 2018.
___________________JAPANESE JOURNAL OF INFECTIOUS DISEASES
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Submitted on: 30 May 2022.
Revised on: 10 July 2022.
Accepted on: 26 July 2022.
___________________JAPANESE JOURNAL OF INFECTIOUS DISEASES
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Submitted on: 28 March 2008.
Revised on: 14 July 2008.
Accepted on: 29 August 2008.
___________________JAPANESE JOURNAL OF INFECTIOUS DISEASES