PERINATAL CARE IN A NORTHEASTERN BRAZILIAN STATE: STRUCTURE, WORK PROCESSES, AND EVALUATION OF ESSENTIAL NEWBORN CARE COMPONENTSAUTHOR'S RESPONSE LETTERPerinatal care in a northeastern Brazilian state: structure, work processes, and evaluation of the components of essential newborn careHealth facility structure and maternal characteristics related to essential newborn care in Brazil: a cross-sectional studyObstetric care models in the Southern Region of Brazil and associated factors.