NEW : Doctor : about 30 percent of the At least 507 people dead at hospital are children . NEW : At least 507 Egyptian have been killed in the military operation . About 10 truckloads of donations from Saudi Arabia , Qatar , Turkey and Greece crossed into Gaza on Saturday . Doctor : `` people were dying before they got treatment '' 500 trucks bearing aid could not cross the Gaza - Gaza border on Sunday .
NEW : Doctor : about 30 percent of the At least 507 people dead at hospital are children . NEW : At least 507 Egyptian have been killed in the military operation . Doctor : `` people were dying before they got treatment '' 500 trucks bearing aid could not cross the Gaza - Gaza border on Sunday .