Chauhan, S., Shende, S. and Vinayak Shidhaye, R. 2016. Evaluation of laryngoscopic view, intubation difficulty and sympathetic response during direct laryngoscopy in sniffing position versus simple head extension: a clinical comparative study. International Journal of Medical Research and Review. 4, 9 (Sep. 2016), 1531-1537. DOI:https://doi.org/10.17511/ijmrr.2016.i09.03.