IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-12-8-51739 Original Research Paper Effectiveness Of Structured Teaching Programme On Knowledge And Practice Regarding Use Of Metered Dose Inhaler (M.D.I.) With Spacer Among Patients With Respiratory Disorders In Chest O.P.D. Of Selected Hospitals Of Kolkata Pal Dr. August 2023 12 8 01 02