Measuring Health System Strengthening: Application of the Balanced Scorecard Approach to Rank the Baseline Performance of Three Rural Districts in Zambia. - Mutale, Wilbroad; Godfrey-Fausset, Peter; Mwanamwenge, Margaret Tembo; Kasese, Nkatya; Chintu, Namwinga; Balabanova, Dina; Spicer, Neil; Ayles, Helen (PLoS ONE, 2013)