Jungeun Kim, Sungwon Jeon, Jae-Pil Choi, Asta Blazyte, Yeonsu Jeon, Jong-Il Kim, Jun Ohashi, Katsushi Tokunaga, Sumio Sugano, Suthat Fucharoen, Fahd Al-Mulla, Jong Bhak, The Origin and Composition of Korean Ethnicity Analyzed by Ancient and Present-Day Genome Sequences, Genome Biology and Evolution, Volume 12, Issue 5, May 2020, Pages 553–565, https://doi.org/10.1093/gbe/evaa062
“International Religious Freedom Report: Democratic People's Republic of Korea (DPRK) 2015” (PDF). U.S. Department of State. Bureau of Democracy, Human Rights, and Labor. 2021年2月17日閲覧。 “In a 2002 report ... the government reported there were 12,000 Protestants, 10,000 Buddhists, and 800 Roman Catholics. The report noted that Cheondoism, a modern religious movement based on 19th century Korean neo-Confucian movement, had approximately 15,000 practitioners. Consulting shamans and engaging in shamanistic rituals is reportedly widespread but difficult to quantify.”
“International Religious Freedom Report: Republic of Korea 2015” (PDF). U.S. Department of State. Bureau of Democracy, Human Rights, and Labor. 2021年2月17日閲覧。 “According to a 2010 survey, approximately 24 percent of the population is Buddhist; 24 percent Protestant; 8 percent Roman Catholic; and 43 percent professes no religious belief. Followers of all other religious groups ... together constitute less than 1 percent of the population.”
