Does giving oral supplements with vitamin D alone, or in combination with calcium, to women during pregnancy, improve maternal and neonatal outcomes?
PICO – Population, Intervention, Comparison, Outcome
3. Creating the search strategy:
(pregnant OR pregnancy OR prenatal) AND (“vitamin D” OR calciferol OR ergocalciferol OR viosterol OR cholecarciferol) AND (“pre-eclampsia” OR “gestational diabetes” OR “low birthweight”)