The RESUS team will gather the following data in the delivery room: environmental temperature of the delivery room, rectal temperature immediately after delivery, annotation of warming aids implemented. The RESUS team also cares for the infant in the first 4 hours of life. Initial vital signs (heart rate, respiratory rate, and blood pressure), temperature, need of ventilation, need of intervention will be recorded by the RESUS team. After 4 hours the care will be assumed by the primary NICU team as per our standard practice.