LE, Thi Diem Tuyet, et al. “NUTRITIONAL STATUS OF PATIENTS WITH CHRONIC OBSTRUCTIVE PULMONARY DISEASE IN BACH MAI HOSPITAL IN 2014”. Vietnam Journal of Nutrition &Amp; Food, vol. 12, no. 3, June 2016, pp. 52-57, https://tapchidinhduongthucpham.org.vn/index.php/jfns/article/view/594.