TY - JOUR A1 - Machiyama, K. A1 - Casterline, J.B. A1 - Mumah, J.N. A1 - Huda, F.A. A1 - Obare, F. A1 - Odwe, G. A1 - Kabiru, C.W. A1 - Yeasmin, S. A1 - Cleland, J. T1 - Reasons for unmet need for family planning, with attention to the measurement of fertility preferences: Protocol for a multi-site cohort study Y1 - 2017 DO - 10.1186/s12978-016-0268-z VL - 14 IS - 23 ER -