TY - JOUR A1 - Eboreime, E. A1 - Abimbola, S. A1 - Bozzani, F. T1 - Access to routine immunization: A comparative analysis of supply-side disparities between northern and southern Nigeria Y1 - 2015 DO - 10.1371/journal.pone.0144876 JF - PloS One VL - 10 IS - 12 ER -