Six people are still in intensive care after the Orlando club attack, with one victim saying he escaped death when the killer aimed at his head but hit his hand.
Doctors described seeing the "full gamut of wounds" after Sunday's attack that left 49 dead - injuries to the extremities, the abdomen and large soft tissue wounds.
One victim - appearing alongside doctors at Orlando Regional Medical Centre - said he was left helpless after being shot three times in the leg with people "running on top of me" to escape.
"All I could hear was the shotgun, one after another and people screaming, people yelling for help," said Angel Colon.
After killer Omar Mateen opened fire in another area of the gay club, Mr Colon told reporters: "I hear him coming back and he's shooting everyone that's already dead on the floor, making sure they're dead.
Video:Orlando Killer's Dad Speaks
"I was able to peek over and I can just see him shooting at everyone. I can hear the shotguns closer and I look over and he shoots the girl next to me.
"I'm just there laying down and I'm thinking, 'I'm next, I'm dead.'
"So I don't know how, but by the glory of God, he shoots towards my head but it hits my hand.
"And then he shoots me again and it hits the side of my hip."