1. Studies of missed opportunities for immunization in developing and industrialized countries;SS Hutchins;Bulletin of the World Health Organization,1993
2. World Health Organization. Missed Opportunities for Vaccination (MOV) Strategy 2017 [Available from: http://www.who.int/immunization/programmes_systems/policies_strategies/MOV/en/.
3. Missed opportunities and barriers for vaccination: a descriptive analysis of private and public health facilities in four African countries;CZ Olorunsaiye;The Pan African medical journal,2017
4. Under vaccination of children among Maasai nomadic pastoralists in Kenya: is the issue geographic mobility, social demographics or missed opportunities?;AM Pertet;BMC Public Health,2018
5. Missed opportunities and caretaker constraints to childhood vaccination in a rural area in Uganda;F Tugumisirize;East African medical journal,2002