1. Ten great public health achievements – United States, 1900–1999;Morb Mortal Wkly Rep,1999
2. Effects of influenza on pregnant women and infants;Rasmussen;Am J Obstet Gynecol,2012
3. On intrauterine vaccination;Burckhardt;Deutsches Archf Win Med,1879
4. Ober Immunitat durch Vererbung und Saugung;Ehrlich;Ztschr Hyg Infektionskr,1892
5. Antibodies in placental extracts;McKhann;J Infect Dis,1933