TY - JOUR A1 - Sánchez-Páez, D.A. A1 - Masquelier, B. A1 - Menashe Oren, A. A1 - Baruwa, O. A1 - Reniers, G. T1 - Measuring under-five mortality and fertility through mobile phone surveys: An assessment of selection bias in 34 low- and middle-income countries Y1 - 2023 DO - 10.1136/bmjopen-2023-071791 VL - 13 IS - 11 ER -