Mortality surveillance methods to identify and characterize deaths in child health and mortality prevention surveillance network sites by Salzberg, NT, Sivalogan, K, Bassat, Q, Taylor, AW, Adedini, S, El Arifeen, S, Assefa, N, Blau, DM, Chawana, R, Cain, CJ, Cain, KP, Caneer, JP, Garel, M, Gurley, ES, Kaiser, R, Kotloff, KL, Mandomando, I, Morris, T, Nyamthimba Onyango, P, Sazzad, HMS, Scott, JAG, Seale, AC, Sitoe, A, Sow, SO, Tapia, MD, Whitney, EA, Worrell, MC, Zielinski-Gutierrez, E, Madhi, SA, Raghunathan, PL, Koplan, JP, Breiman, RF, Child Health and Mortality Prevention Surveillance (CHAMPS) Methods Consortium