SAN FRANCISCO, Sep. 20, 2011 / PRNewswire-USNewswire / - Pa nthawi ya Msonkhano Wachigawo wa FDA Lachinayi, ogula ovulala, madokotala a mano, ndi akatswiri azaumoyo azitsutsa a Food and Drug Administration kuti ateteze anthu ku "siliva" 45-55% ya mercury. Dr. Jeffrey Shuren, Mtsogoleri wa Center for Devices and Radiological Health (CDRH), azichita msonkhanowu pa Seputembara 22, kuyambira 8 koloko masana ku Embassy Suites Hotel, San Francisco Airport.
