Poehling KA, Szilagyi PG, Staat MA, Snively BM, Payne DC, Bridges CB, Chu SY, Light LS, Prill MM, Finelli L, Griffin MR, Edwards KM. Impact of maternal immunization on influenza hospitalizations in infants. Am J Obstet Gynecol. 2011 Jun; 204(6 Suppl 1):S141-8.