Risks of smoking during pregnancy. The paper is more scholarly and it is what you would find if you did a review of the nursing literature on smoking in pregnancy, how does it effect pregnancy and birth, what should the nurse know, what is the pathophysiology behind how smoking effects pregnancy, how should a nurse counsel a patient who is pregnancy and smokes What are treatments.
Also, maybe look at what the literature says about smoking while pregnant and while not pregnant. See how it affects people who are pregnant compared to those who are not.