1. Department of Microbiology and ParasitologyInstitute of Biomedical SciencesCollege of Health SciencesMekelle University Mekelle Ethiopia
2. College for Public Health and Social JusticeSaint Louis University St. Louis MO USA
3. Department of AnthropologyCollege of Arts and SciencesWashington University in St. Louis St. Louis MO USA
4. Department of Obstetrics & GynecologySchool of MedicineWashington University in St. Louis St. Louis MO USA