Journal Article
Okwaraji, Yemisrach B, Kim Mulholland, JoannaRMArmstrong Schellenberg, Gashaw Andarge, Mengesha Admassu, and Karen M Edmond.
"The association between travel time to health facilities and childhood vaccine coverage in rural Ethiopia. A community based cross sectional study." BMC Public Health 12, no. 1 (2012): 476.