TWINS HOMECOMING DAY -- Quadruplets stood side by side, holding hands at the "Twins Plus Homecoming Day" event held at the Seoul National University playground on Saturday. The Seoul National University Medical Research Center invited families with multiple pregnancies, including twins or more, who were delivered at the hospital, and opened a one-day amusement park. Professor Jeon Jong-kwan of the Department of Obstetrics and Gynecology explained that the purpose of the event was to have a positive impact on childbirth culture in an era of low birthrate. (Yonhap)