Nitrosamines crisis in pharmaceuticals − Insights on toxicological implications, root causes and risk assessment: A systematic review oleh Hemanth P.R. Vikram, Tegginamath Pramod Kumar, Gunjan Kumar, Narasimha M. Beeraka, Rajashree Deka, Sheik Mohammed Suhail, Sandeep Jat, Namitha Bannimath, Gayatiri Padmanabhan, Ravandur S. Chandan, Pramod Kumar, Bannimath Gurupadayya