Effect of dexamethasone gargle, intravenous dexamethasone, and their combination on postoperative sore throat: a randomized controlled trial oleh Seunghee Ki, Inwook Myoung, Soonho Cheong, Sehun Lim, Kwangrae Cho, Myoung-hun Kim, Yongjae Han, Minkyung Oh, Yohan Park, Kwanghee Kim, Jeonghan Lee