Application of systems thinking: 12-month postintervention evaluation of a complex health system intervention in Zambia: the case of the BHOMA. - Mutale, Wilbroad; Ayles, Helen; Bond, Virginia; Chintu, Namwinga; Chilengi, Roma; Mwanamwenge, Margaret Tembo; Taylor, Angela; Spicer, Neil; Balabanova, Dina (Journal of Evaluation in Clinical Practice, 2017)