King, C; Beard, J; Crampin, AC; Costello, A; Mwansambo, C; Cunliffe, NA; Heyderman, RS; ... VacSurv Consortium; + view all King, C; Beard, J; Crampin, AC; Costello, A; Mwansambo, C; Cunliffe, NA; Heyderman, RS; French, N; Bar-Zeev, N; VacSurv Consortium; - view fewer (2015) Methodological challenges in measuring vaccine effectiveness using population cohorts in low resource settings. Vaccine , 33 (38) pp. 4748-4755. 10.1016/j.vaccine.2015.07.062.