TY  - JOUR
A1  - Ahmed, S.
A1  - Li, Q.
A1  - Liu, L.
A1  - Tsui, A.O.
T1  - Maternal deaths averted by contraceptive use: an analysis of 172 countries
DO  - 10.1016/S0140-6736(12)60478-4
JF  - The Lancet
VL  - 380
IS  - 9837
SP  - 111
EP  - -125

ER  -