Diagnostic practices and treatment for p. vivax in the interethnic therapeutic encounter of South-Central Vietnam: a mixed-methods study -н Nguyen, TT, Nguyen, XX, Ronse, M, Nguyen, QT, Ho, PQ, Tran, DT, Gerrets, R, Thriemer, K, Ley, B, Marfurt, J, Price, RN, Grietens, KP, Gryseels, C