Cortés-Yepes reported a prevalence of 7.3%, corresponding to 160 expectant mothers; 70 of them 43.7% continued smoking an average of 7.2 cigarettes per day during pregnancy.
Cortés-Yepes reporta una prevalencia de 7,3% que corresponde a 160 gestantes. De estas, 70 43,7% continuaron fumando durante el embarazo en promedio 7,2 cigarrillos/día.