The group listed below need mothers who had AND those who didn't have hyperemesis gravidarum for their research. They need 200 more women who didn't have the condition. More information on the web link
Hyperemesis gravidarum (HG) is a debilitating disease of pregnancy marked by moderate to severe nausea/vomiting that causes rapid weight loss, malnutrition and dehydration in the mother, and unknown consequences for their unborn child(ren). Death may occur if inadequately treated.
www.helpher.org/about-her-foundation/current-research.php