Journal Article
Watt, James P, Lara J Wolfson, Katherine L O'Brien, Emilie Henkle, Maria Deloria-Knoll, Natalie McCall, Ellen Lee, Orin S Levine, Rana Hajjeh, and Kim Mulholland.
"Burden of disease caused by Haemophilus influenzae type b in children younger than 5 years: global estimates." The Lancet 374, no. 9693 (2009): 903-911.