Dimitrova, Antoaneta, Nikolay Izov, Ivan Maznev, Danche Vasileva, and Milena Nikolova. 2017. “Рhysiotherapy in Patients With Chronic Obstructive Pulmonary Disease”. Open Access Macedonian Journal of Medical Sciences 5 (6):720-23. https://doi.org/10.3889/oamjms.2017.176.