Prototype Star Fruit-Honey Product and Effectiveness on Antixidants, Inflammation and Walking Distance in Participants with Stable Chronic Obstructive Pulmonary Disease (COPD), Pothasak, Yothin, Leelarungrayub Jirakrit, Natakankitkul Surapol, and Singhatong Supawatchara , Pharmacognosy Journal, August 2020, Volume 12, Issue 5, p.1121-1134, (2020)