Originally published by the Voice of America (www.voanews.com). Voice of America is funded by the US Federal Government and content it exclusively produces is in the public domain. Sharon's Breathing Tube Surgically Replaced ------------------------------------------- http://enews.voanews.com/t?ctl=10A2550:3919ACA 77-year-old prime minister has been on respirator since he was incapacitated by a brain hemorrhage on January 4 Israeli doctors say Prime Minister Ariel Sharon, who remains in a coma since suffering a stroke two weeks ago, underwent a surgical procedure overnight to replace his breathing tube. The Hadassah hospital in Jerusalem issued a statement Wednesday morning, saying the procedure was necessary because the respiratory pipe developed a technical problem. The statement said Mr. Sharon's condition continues to be critical but stable. The 77-year-old prime minister has been on respirator since he was incapacitated by a brain hemorrhage on January 4. Some information for this report was provided by AP and Reuters. .