I am looking to do a phd in public health. My interest is in maternal and child nutrition. My aim is to improve the nutritional and health status of pregnant women in Nigeria bearing in mind that this will improve the wellbeing of their offsprings. I am thinking to carry out a community specific intervention. Please can you enlighten me on what else I can do? How will the study design be like? Keeping in mind that the phd is only for 3 years. Thank you