Diphtheria Outbreaks in Schools in Central Highland Districts, Vietnam, 2015–2018 oleh Noriko Kitamura, Thao T.T. Le, Lien T. Le, Luong D. Nguyen, Anh T. Dao, Thanh T. Hoang, Keisuke Yoshihara, Makiko Iijima, Tran M. The, Hung M. Do, Huy X. Le, Hung T. Do, Anh D. Dang, Mai Q. Vien, Lay-Myint Yoshida