Chloroquine has shown high therapeutic efficacy against uncomplicated Plasmodium vivax malaria in southern Ethiopia: seven decades after its introduction by Mare, AK, Mohammed, H, Sime, H, Hailgiorgis, H, Gubae, K, Gidey, B, Haile, M, Assefa, G, Bekele, W, Auburn, S, Price, R, Parr, JB, Juliano, JJ, Tasew, G, Abay, SM, Assefa, A