Submitted on: 12 July 2007.
Revised on: 05 August 2007.
Accepted on: 31 August 2007.
Travel Medicine and Infectious Disease
http://reply.papertrans.cn/3/300/29904/29904-32.png
http://reply.papertrans.cn/3/300/29904/29904-33.png
Submitted on: 11 August 2017.
Revised on: 28 August 2017.
Accepted on: 22 September 2017.
Travel Medicine and Infectious Disease
http://reply.papertrans.cn/3/300/29904/29904-35.png
Submitted on: 24 May 2018.
Revised on: 13 June 2018.
Accepted on: 09 July 2018.
Travel Medicine and Infectious Disease