Another point that frequently arises in this debate is the issue of age falsification. Since stricter age limit rules were first adopted in the early 1980s, there have been several well-documented, and many more suspected, cases of juniors with falsified documents competing as seniors. The FIG has only taken disciplinary action in three cases: those of Kim Gwang-Suk of North Korea, who competed at the 1989 World Artistic Gymnastics Championships at the approximate age of eleven; North Korean Hong Su-jong, who competed under three different birth dates in the 2000s, and China's Dong Fangxiao, who competed at the 2000 Olympics when she was two years below the age minimum.