Sarayoot Mongkol และ Jatuporn Wongsathikul. (2015) A comparison of six-minute walk distance between COPD patients with and without anemia. <i>Journal of Associated Medical Sciences</i>, <i>48</i>(1), 67-74.Sarayoot Mongkol และ Jatuporn Wongsathikul. "A comparison of six-minute walk distance between COPD patients with and without anemia". Journal of Associated Medical Sciences 48 (2015):67-74.Sarayoot Mongkol และ Jatuporn Wongsathikul. A comparison of six-minute walk distance between COPD patients with and without anemia. Faculty of Associated Medical Sciences, Chiang Mai University:ม.ป.ท. 2015.