IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-12-6-50351 Original Research Paper A Study To Assess The Effectiveness Of Structured Teaching Programme Regarding Mobile Phone Usage On Sleep Among B.Sc. Nursing Students At Srm College Of Nursing, Kattankulathur. Gupta Dr. Sabita Yadav Dr. June 2023 12 6 01 02