0120-41570120-4157S0120-4157201900020031410.7705/biomedica.v39i3.3837ColombiaColombiaColombia00062019000620193923143222016387462-7420081151265-72American College of Obstetricians and Gynecologists20061081039-47201619812-21200762540-7197954361-5201620612-2120152011901036-4220117676-852002191-5Ministerio de Salud y Protección Social201586201341692-520145717-27201543136-412012117119-23200832005841075-80200826188-972009192197-2032009201036-45200612768-722017116380-72008231553-92012161200786228-341985151227-31201053209-18201324703-9201025651-51979133152-4200410301-62010201777-852015121142-8201137377-82016391159-64