Comparison of the efficacy between lidocaine spray plus lidocaine jelly lubrication and lidocaine jelly lubrication alone prior to nasogastric intubation: a prospective double-blind randomized controlled study.
Comparative efficacy of lidocaine spray plus lidocaine jelly lubrication and lidocaine jelly lubrication alone before nasogastric intubation : a prospective double-blind randomized controlled study