Cohort Profile: The PERU MIGRANT Study–A prospective cohort study of rural dwellers, urban dwellers and rural-to-urban migrants in Peru. (25th July 2017) - Carrillo-Larco, Rodrigo M; Ruiz-Alejos, Andrea; Bernabé-Ortiz, Antonio; Gilman, Robert H; Smeeth, Liam; Miranda, J Jaime