1. Department of BiostatisticsUAB School of Public HealthBirminghamAlabamaUSA
2. Office of the DeanUAB School of Public HealthBirminghamAlabamaUSA
3. Center for Perinatal ResearchResearch Institute at Nationwide Children's Hospital and Department of PediatricsThe Ohio State UniversityColumbusOhioUSA
4. Department of EpidemiologyUAB School of Public HealthBirminghamAlabamaUSA
5. Department of Preventive MedicineUAB School of MedicineBirminghamAlabama