Efficacy and safety of invasive laser acupuncture (650 and 830 nm) on knee osteoarthritis: A pilot randomized clinical trial - Raeon Jang; Changsop Yang; Jae-Hong Kim; Dongwoo Nam; Jeong-Cheol Shin; Gwang-Cheon Park; Byoung-Kab Kang; Kyung-Min Shin; Ae-Ran Kim (PLoS ONE, 2026)