Researchers seek Valley volunteers for pregnancy anemia studyResearchers are seeking Central Valley residents to participate in a study focused on preventing iron deficiency anemia during pregnancy and reducing related maternal health complications. Researchers are seeking Central Valley residents to participate in a study focused on preventing iron deficiency anemia during pregnancy and reducing related maternal health complications. Researchers are seeking Central Valley residents to participate in a study focused on preventing iron deficiency anemia during pregnancy and reducing related maternal health complications. Researchers are seeking Central Valley residents to participate in a study focused on preventing iron deficiency anemia during pregnancy and reducing related maternal health complications. FRESNO, Calif. (KFSN) -- Researchers are seeking Central Valley residents to participate in a study focused on preventing iron deficiency anemia during pregnancy and reducing related maternal health complications.