Mako Hoshino and Rika Kihara (IMAGE) Michigan Medicine - University of Michigan Caption After meeting through a prenatal group that was part of a U-M study in Ann Arbor, Mich., new moms Mako Hoshino (left) and Rika Kihara still meet for playdates with Hoshino's son Koita and Kihara's daughter Ayaka. Credit University of Michigan Health System Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.