Evaluation of the collaborative integrated surveillance system (ViCo) in Guatemala: a qualitative study on lessons learned and future perspectives oleh Jahn Jaramillo, Mariangeli Freitas Ning, Loren Cadena, Michael Park, Terrence Lo, Emily Zielinski-Gutierrez, Andres Espinosa-Bode, Marines Reyes, Maria Del Rosario Polo, Olga Henao