Clinical response to antibiotics in indigenous versus non-indigenous children under 5 years old with community-acquired pneumonia in Otavalo, Ecuador - Matute, Susana Eulalia Dueñas; Donadi, Eduardo Antônio; Nunes, Altacilio Aparecido; Martinez, Edson Zangiacomi (Revista da Sociedade Brasileira de Medicina Tropical, 2020)