Microscopic and PCR-based detection of microsporidia spores in human stool samples Cristian Javier Mena; Andrés Barnes; Gonzalo Castro; Lorena Guasconi; Verónica Liliana Burstein; Ignacio Beccacece; Patricia Catalina Paulin; Joel Arneodo; Silvana Carnevale; Germán Astudillo; Laura Cervi; Martín Gustavo Theumer; Laura Silvina Chiapello;