Ni Made Restiawati, Faisal Yunus, Ratnawati. Abstract Background : Exhaled nitric oxide (FeNO) is recognized as reliable surrogate marker of eosinophilic airway inflammation in asthma patient and offers the advantage of being completely non-invasive and easy procedure. Methods : This cross-sectional comparative study involves 96 asthmatic subjects which then classified into two main categories : […]