Treeprasertsuk, Sombat
Poovorawan, Kittiyod
Soonthornworasiri, Ngamphol
Chaiteerakij, Roongruedee
Thanapirom, Kessarin
Mairiang, Pisaln
Sawadpanich, Kookwan
Sonsiri, Kanokwan
Mahachai, Varocha
Phaosawasdi, Kamthorn
Funding for this research was provided by:
The Gastroenterological Association of Thailand (GAT)
Chulalongkorn University