Pal, T., Biswas, C. and Bhar Kundu, S. (2022) “Comparison of efficacy of butorphanol and nalbuphine as premedicant in patients undergoing elective craniotomy using propofol and desflurane anesthesia – A randomized clinical study”, Asian Journal of Medical Sciences, 13(7), pp. 43–48. doi: 10.3126/ajms.v13i7.42973.