Malaria elimination challenges in countries approaching the last mile: a discussion among regional stakeholders by Lek, D, Shrestha, M, Lhazeen, K, Tobgyel, T, Kandel, S, Dahal, G, Ghimire, YC, Shrestha, B, Ghimire, P, Hein, PS, Peto, TJ, Callery, JJ, Tripura, R, von Seidlein, L, Amaratunga, C, Lynch, CA, Dondorp, AM, Adhikari, B