1. Impact of Aerobika® oscillating positive expiratory pressure in improving small airway resistance, lung function, symptoms and exercise capacity in chronic obstructive pulmonary disease
   Siti Nurhanis Sahardin et al, 2023, Frontiers in Medicine CrossRef
2. Risk Estimation of Infectious and Inflammatory Disorders in Hospitalized Patients With Acute Ischemic Stroke Using Clinical-Lab Nomogram
   Junhong Li et al, 2021, Frontiers in Neurology CrossRef
3. Effect of PEP flute self-care versus usual care in early covid-19: non-drug, open label, randomised controlled trial in a Danish community setting
   Annette Mollerup et al, 2021, BMJ CrossRef