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Rheumatology / Original Article
Cross-cultural adaptation and preliminary validation of the Korean version of the Psoriatic Arthritis Impact of Disease-12 questionnaire
Bon San Koo, Jung Gon Kim, Bo Young Yoon, Ji-Hyoun Kang, Sung-Eun Choi, Sooin Jung, Seyeong Kim, Tae-Jong Kim
Korean J Intern Med. 2026;41(2):341-349. Published online March 1, 2026
Background/Aims: The Psoriatic Arthritis Impact of Disease (PsAID-12) questionnaire was developed to measure quality of life and disease impact in patients with psoriatic arthritis (PsA). We aimed to translate the English PsAID-12 into Korean and to evaluate its reliability and validity.
Methods: T..
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Rheumatology / Original Article
Distribution of serum uric acid levels and prevalence of hyper- and hypouricemia in a Korean general population of 172,970
Bon San Koo, Hye-Jin Jeong, Chang-Nam Son, Sang-Hyon Kim, Hyun Jung Kim, Gheun-Ho Kim, Jae-Bum Jun
Korean J Intern Med. 2021;36(Suppl 1):S264-S272. Published online November 24, 2020
Background/Aims: We investigated the distribution of serum uric acid (SUA) levels and estimated the prevalence of hyperuricemia and hypouricemia in the Korean population.
Methods: This cross-sectional study used data from the Korean Genome and Epidemiology Study and included 172,970 participants (5..
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Rheumatology / Original Article
Effect of biologics in the level of cytokines in the synovial fluid of patients with ankylosing spondylitis
Bon San Koo, Sungsin Jo, Eunji Kwon, Ji Hui Shin, Jin-Wuk Hur, Tae-Hwan Kim
Korean J Intern Med. 2020;35(2):465-473. Published online December 16, 2019
Background/Aims: Biologics are very effective drugs for patients with ankylosing spondylitis (AS). However, there are patients who are not responding to biologics. This study aimed to evaluate the level of tumor necrosis factor α (TNF-α), interleukin (IL)-23, and IL-17 from synovial fluid in patie..
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Rheumatology / Original Article
Mortality in patients with rheumatoid arthritis-associated interstitial lung disease treated with an anti-tumor necrosis factor agent
Bon San Koo, Seokchan Hong, You Jae Kim, Yong-Gil Kim, Chang-Keun Lee, Bin Yoo
Korean J Intern Med. 2015;30(1):104-109. Published online December 30, 2014
Background/Aims: To evaluate the impact on mortality of anti-tumor necrosis factor (anti-TNF) treatment of rheumatoid arthritis-associated interstitial lung disease (RA-ILD).
Methods: We retrospectively reviewed the medical records of 100 RA-ILD patients who visited our tertiary care medical center..
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