Effect of oral ginger on prevention of nausea and vomiting after laparoscopic cholecystectomy: a double-blind, randomized, placebo-controlled trial oleh Alireza Bameshki, Mohammad Hasan Namaiee, Ali Jangjoo, Maliheh Dadgarmoghaddam, Mohammad Hosein Eshaghi Ghalibaf, Atefeh Ghorbanzadeh, Shima Sheybani