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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. BioMed Central, 2012.

Okwaraji, Yemisrach B., et al. The Association between Travel Time to Health Facilities and Childhood Vaccine Coverage in Rural Ethiopia. A Community Based Cross Sectional Study. BioMed Central, 2012.