Antimicrobial use for treatment of healthcare-associated infections and bacterial resistance in a reference neonatal unit Ana Carolina Bueno e Silva; Leni Márcia Anchieta; Viviane Rosado; Janita Ferreira; Wanessa Trindade Clemente; Julia Sampaio Coelho; Paulo Henrique Orlandi Mourão; Roberta Maia de Castro Romanelli;