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Budiono B, Mustayah M, Aindrianingsih A. THE EFFECT OF PURSED LIPS BREATHING IN INCREASING OXYGEN SATURATION IN PATIENTS WITH CHRONIC OBSTRUCTIVE PULMONARY DISEASE IN INTERNAL WARD 2 OF THE GENERAL HOSPITAL OF DR. R. SOEDARSONO PASURUAN. Public Health of Indonesia [Internet]. 2017 Sep. 19 [cited 2024 Apr. 30];3(3):117-23. Available from: https://stikbar.org/ycabpublisher/index.php/PHI/article/view/132