ABSTRACT
All over the world, a very large number of people suffer from signi™cant morbidity and mortality as a result of diseases affecting the respiratory system. The respiratory system functions to bring oxygen to and remove carbon dioxide from living organisms. Blockage of the respiratory passage as a result of underlying inŠammation
1.1 Introduction ......................................................................................................1 1.2 Respiratory System ...........................................................................................2 1.3 Epidemiology of Respiratory Diseases .............................................................3
