Dr. Shagun, Dr. Sunil Sharma, Dr. Malay Sarkar, and Dr. RS Negi. 2025. “Smoking Index and Risk Gradient for Spontaneous Pneumothorax: Evidence from 111 Indian Patients”. International Journal of Pharmacy Research & Technology (IJPRT) 15 (1):548-50. https://doi.org/10.55529/ijprt.422.