Authors:

[I] could see how nervous everybody was in the beginning and how silent it was when we had trouble with the artificial heart [during the surgery, but later in the operation, when it was working, there were moments] of loud and raucous humor.

[I] could see how nervous everybody was in the beginning and how silent it was when we had trouble with the artificial heart [during the surgery, but later in the operation, when it was working, there were moments] of