Möller B., Lushino O., Kabukoba J., Kavishe F., Gebre-Medhin M., Meirik O., and Lindmark G. “A Prospective Area-Based Study of the Outcome of Pregnancy in Rural Tanzania”. Upsala Journal of Medical Sciences, vol. 94, no. 1, Sept. 1989, pp. 101-9, doi:10.3109/03009738909179253.