Human versus equine intramuscular antitoxin, with or without human intrathecal antitoxin, for the treatment of adults with tetanus: a 2 × 2 factorial randomised controlled trial... by Van Hao, N, Loan, HT, Yen, LM, Kestelyn, E, Hong, DD, Thuy, DB, Nguyen, NT, Duong, HTH, Thuy, TTD, Nhat, PTH, Khanh, PNQ, Dung, NTP, Phu, NH, Phong, NT, Lieu, PT, Tuyen, PT, Hanh, BTB, Nghia, HDT, Oanh, PKN, Tho, PV, Tan Thanh, T, Turner, HC, van Doorn, HR, Van Tan, L, Wyncoll, D, Day, NP, Geskus, RB, Thwaites, GE, Van Vinh Chau, N, Thwaites, CL