Given this reference text about Neonatology, tell me which specialty it is related to, and where it is typically practiced.

Context: Neonatology is a subspecialty of pediatrics that consists of the medical care of newborn infants, especially the ill or premature newborn. It is a hospital-based specialty, and is usually practiced in neonatal intensive care units (NICUs). The principal patients of neonatologists are newborn infants who are ill or require special medical care due to prematurity, low birth weight, intrauterine growth restriction, congenital malformations (birth defects), sepsis, pulmonary hypoplasia or birth asphyxia.

Answer: Neonatology is a subspecialty of pediatrics, which is typically practiced in a hospital's Neonatal Intensive Care Unit, often referred to as a NICU.