Dr. John Cook-Jong Lee is the trauma surgeon who saved the 24-year-old soldier's life.
Kim Yo Jong shook hands with Moon at the beginning of the ceremony. Trump has threatened to take military action on the country for its nuclear testing and has called the North Korean dictator "Little Rocket Man".
North Korea is sending Kim Jong Un's sister Kim Yo Jong to the Winter Olympics in South Korea.
"It means that the North Korean's national healthcare system is not working properly", Lee said.
Japanese Prime Minister Shinzo Abe is among the global VIPs that will gather for the two-hour ceremony at the $58 million stadium along with some 35,000 spectators Friday evening. As will Vice President Mike Pence.
Mourinho Confirms Trio Will Miss Newcastle Trip
What I know of the club, it has an incredible army of fans, a city that lives for the club and supports the club. I like the Geordies. "I think they know how to get the points to stay in the division".
News reports said 4,000 of the phones were being given to athletes attending the Pyeongchang games, but that athletes from Iran and North Korea would be excluded because of United Nations sanctions against the two countries over their nuclear programmes.
Moon's office said he told Abe that the talks between the Koreas would not disrupt global efforts to deal with North Korea's nuclear program.
Pressure is now on NBC to see if it can drive viewers to Friday's primetime Opening Ceremony coverage, even though all of TV-watching America will have had the opportunity to stream the affair throughout the day.
Reviving inter-Korean talks is key to the polices of Moon, who says South Korea should be in the driver's seat in global efforts to deal with the North's nuclear threat.
Women's ice hockey (Korea vs. Switzerland): This will be notable if only because it marks the debut of the joint Korean ice hockey team, a union between North and South Korea that follows an unprecedented Opening Ceremony march together.
Last November, one North Korean soldier took a much riskier route when he ran across the fortified border with South Korea under fire from fellow troops.
The protests erupted hours before two Senior North Korean officials were scheuled to arrive at the Winter Olympic Opening ceremony.
If any of the North Korean athletes were to defect and the news went public, it would also strike up geopolitical tensions with South Korea, just as relations were thawing between Pyongyang and Seoul.