From the Centers for Disease Control and Prevention. Update: expanded availability of thimerosal preservative-free hepatitis B vaccine.
D017325:Hepatitis B Vaccines / Q000600:supply & distribution; D006801:Humans; D007231:Infant, Newborn; D011310:Preservatives, Pharmaceutical; D013849:Thimerosal; D014481:United States
D017325:Hepatitis B Vaccines; D011310:Preservatives, Pharmaceutical; D013849:Thimerosal