has subject area Adult Air Pollution - Tobacco Smoke Pollution Behavior and Behavior Mechanisms - Mothers Biomarkers Community Health Services - Prenatal Care Cotinine Education, Nonprofessional - Smoking Prevention Environment and Public Health - Prospective Studies Environment and Public Health - Reproducibility of Results Environment and Public Health - Surveys and Questionnaires Female Health Care Evaluation Mechanisms - Prospective Studies Health Care Evaluation Mechanisms - Reproducibility of Results Health Care Evaluation Mechanisms - Surveys and Questionnaires Health Services - Prenatal Care Humans Investigative Techniques - Prospective Studies Investigative Techniques - Reproducibility of Results Investigative Techniques - Reproducibility of Results Investigative Techniques - Surveys and Questionnaires Maternal Exposure Persons - Mothers Pregnancy Pregnancy Complications Preventive Health Services - Smoking Prevention Self Disclosure Self-Assessment Smoke - Tobacco Smoke Pollution Smoking Sociological Factors - Mothers Therapeutics - Prenatal Care ... more