Pootakham, Wirulda
Sonthirod, Chutima
Naktang, Chaiwat
Ruang-Areerate, Panthita
Yoocha, Thippawan
Sangsrakru, Duangjai
Theerawattanasuk, Kanikar
Rattanawong, Ratchanee
Lekawipat, Napawan
Tangphatsornruang, Sithichoke
Article History
Received: 21 October 2016
Accepted: 19 December 2016
First Online: 2 February 2017
Competing interests
: The authors declare no competing financial interests.