Maternal influenza and perinatal mortality.
D001724:Birth Weight; D004739:England; D005260:Female; D006801:Humans; D007226:Infant Mortality; D007231:Infant, Newborn; D007251:Influenza, Human / Q000150:complications*; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious; D014852:Wales