TI  - The acute effect of bi-level positive airway pressure on heart rate variability in chronic obstructive pulmonary disease patients with hypercapnic respiratory failure
AU  - Yazıcı, M.
AU  - Uzun, K.
AU  - Ülgen, M.S.
AU  - Teke, T.
AU  - Maden, E.
AU  - Kayrak, M.
AU  - Turan, Y.
AU  - Arı, H.
SO  - The Anatolian Journal of Cardiology 2008;8:426-430.
DO  -