The six men received the drug several times, starting on Jan. 7. The first symptoms appeared in one man on Sunday; he was quickly hospitalized, and the ot

The six men received the drug several times, starting on Jan. 7. The first symptoms appeared in one man on Sunday; he was quickly hospitalized, and the other men followed. The trial was halted the next day. They began receiving the drug on January 7, but no symptoms of a problem appeared until this past Sunday.