I did a quick google search
“The hospital story was told to Pepper by a man named Johnton Shelby, whose mother, Lula Mae Shelby, had been a surgical aide at St. Joseph’s that night. Shelby told Pepper the story of how his mother came home the morning after the shooting (she hadn’t been allowed to go home the night before) and gathered the family together. He remembers her saying to them, “I can’t believe they took his life.”
She described chief of surgery Dr. Breen Bland entering the emergency room with two men in suits. Seeing doctors working on King, Bland commanded, “Stop working on the nigger and let him die! Now, all of you get out of here, right now. Everybody get out.”
Johnton Shelby says his mother described hearing the sound of the three men sucking up saliva into their mouths and then spitting. Lula Mae described to her family that she looked over her shoulder as she was leaving the room and saw that the breathing tube had been removed from King and that Bland was holding a pillow over his head.” (x) (x)
There are quite a few sites about this, I’m still reading them, but these are the first two links and a bit of what they said.