In the book My Journey to Heaven: What I Saw and How It Changed My Life, Marvin J. Besteman tells about the time he had pancreatic surgery. He was in horrible pain since the surgeons moved all of his innards around to get to the tumor on his pancreas.
During the night after surgery, he went to heaven for a short period of time. He describes what he saw while at the gate of heaven and some of the people who he spoke to or who were in view of the gate.
He wasn't able to speak to anyone inside nor was he allowed to step foot inside. He admits to being angry that he had to come back to earth.
I've read a few books written by people who returned from death. This book has more description and does not have the tunnel of light. Instead, Marv is escorted to the gate by two angels.
The author is presently back in heaven. He died a couple of weeks after finishing his part of the work on the manuscript. He claimed that he was sent back to earth to tell people what he saw.
I enjoyed reading this book more than some of the others on the same topic.