1. Department of Mountain and Sleep Medicine and Pulmonary Hypertension, National Center of Cardiology and Internal Medicine, Bishkek, Kyrgyzstan.
2. Department of Internal Medicine, University of Giessen and Marburg Lung Center (UGMLC), Justus Liebig University of Giessen, Giessen, Germany.
3. Kyrgyz-Indian Mountain Biomedical Research Center, Bishkek, Kyrgyzstan.
4. Department of Radiology, National Center of Cardiology and Internal Medicine, Bishkek, Kyrgyzstan.