Development and Evaluation of an Improved Technique for Pulmonary Function Testing Using Electrical Impedance Pneumography Intended for the Diagnosis of Chronic Obstructive Pulmonary Disease Patients. - Myeong Heon Sim; Min Yong Kim; In Cheol Jeong; Sung-Bin Park; Suk Joong Yong; Won Ky Kim; Hyung Ro Yoon (Sensors, 2013)