Tichanon Promsrisuk และ Ratchaniporn Kongsui;Napatr Sriraksa;Arunrat Srithawong;Pacharee Manoy;Phoramate Wongpurthichai. (2021) Fractional exhaled nitric oxide is correlated with pulmonary function in patients with stable chronic obstructive pulmonary disease. <i>Naresuan Phayao Journal</i>, <i>14</i>(2), 39-50.Tichanon Promsrisuk และ Ratchaniporn Kongsui;Napatr Sriraksa;Arunrat Srithawong;Pacharee Manoy;Phoramate Wongpurthichai. "Fractional exhaled nitric oxide is correlated with pulmonary function in patients with stable chronic obstructive pulmonary disease". Naresuan Phayao Journal 14 (2021):39-50.Tichanon Promsrisuk และ Ratchaniporn Kongsui;Napatr Sriraksa;Arunrat Srithawong;Pacharee Manoy;Phoramate Wongpurthichai. Fractional exhaled nitric oxide is correlated with pulmonary function in patients with stable chronic obstructive pulmonary disease. University of Phayao:ม.ป.ท. 2021.