Story Published: Sep 4, 2008 at 10:58 AM PDT Story Updated: Sep 4, 2008 at 10:58 AM PDT By Associated Press WASHINGTON (AP) - The Food and Drug Administration ordered stronger warnings Thursday on four medications widely used to treat rheumatoid arthritis and other serious illnesses, saying they can raise the risk of possibly fatal fungal infections.The drugs - Enbrel, Remicade, Humira and Cimzia