Two-stage cluster sampling to assess SARS-CoV-2 seroprevalence without pre-enumeration: An example from Madagascar - Eva Lorenz; John Amuasi; Tiana Randrianarisoa; Tahinamandranto Rasamoelina; Leonard Gunga; Dominik Benke; Jonathan Ströbele; Jenny Kettenbeil; Wibke Loag; Haja Andriamahandry; Landry Razanakolona; Jean Rolland Randrianirina; et al. (PLoS ONE, 2025)