The games will be held between March 9 to 18.
The most experienced Paralympian is hockey player Brad Bowden with five previous Games appearances to his name (four Winter, one Summer).
As in the Olympics, Russian athletes will not compete under the Russian flag, but instead as individuals and grouped under the term "neutral Paralympic athlete".
Pyongyang sent 22 athletes to the Olympics, and teams from the North and South marched together under a unified flag at the opening ceremony.
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The $106m 35,000-seater stadium, which will be pulled down after the closing ceremony, appeared to be about two thirds full, and the crowd watched a ceremony consisting of traditional Korean dance, combined with modern music and blended with light shows.
France took gold in the women's standing downhill skiing.
Switzerland's Theo Gmur took his first Paralympic gold in the men's standing skiing, and United States skier Andrew Kurka, the reigning downhill world champion, won the race in the men's sitting category.
In the biathlon, the U.S. took gold and silver in the women's sit ski, with Kendall Gretsch coming first and Oksana Masters second.
Former US Navy Seal Daniel Cnossen took gold in the men's sit ski, while Andrew Kurka from Team USA won gold in the men's sitting downhill skiing, with Japan's Taiki Morii clinching silver.
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"It's my first Paralympics, first race, so it's just a great way to kick off the week and hopefully there is more to come", Gretsch said.
Not only is Gallagher the first Northern Irish athlete to compete in the Winter Paralympics, but she won Britain's first - and only - gold at the games.
The North's athletes may also have not been keen to march alongside a defector.
Greg Westlake led Team Canada to the gold medal at the Torino Games in 2016 and bronze at the Sochi Games in 2014.
However, there won't be a repeat of the Winter Olympics 2018 - when South and North Korea entered together under a unified flag - as the two countries chose to march separately. "However, despite a day of amicable and positive discussions between the two NPCs in the Paralympic Village, the two parties have decided not to march under the same conditions as the Olympic Opening Ceremony".
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