Figure 1
The sampling areas located in 10 provinces of Thailand including Bangkok, Lamphun, Chachoengsao, Chonburi, Buriram, Udon Thani, Ratchaburi, Songkhla, Phatthalung and Nakhon Si Thammarat province.
The sampling areas located in 10 provinces of Thailand including Bangkok, Lamphun, Chachoengsao, Chonburi, Buriram, Udon Thani, Ratchaburi, Songkhla, Phatthalung and Nakhon Si Thammarat province.