1. Department of Women and Children Health University of Padua Padua Italy
2. Department of Pediatrics and Neonatology Central Hospital of Beira Beira Mozambique
3. Operative Research Unit Doctors with Africa Cuamm Mozambique
4. Biostatistics, Epidemiology and Public Health Unit, Department of Cardiac, Thoracic and Vascular Sciences University of Padua Padua Italy