Recommendation for use of 15- and 20-valent pneumococcal conjugate vaccines in Korean infants and children. - Yun, Ki Wook; Kim, Dong Hyun; Ahn, Jong Gyun; Eun, Byung-Wook; Lee, Jin; Lee, Jina; Lee, Taek-Jin; Lee, Hyunju; Jo, Dae Sun; Cho, Eun Young; Cho, Hye-Kyung; Choi, Soo-Han; et al. (Clinical & Experimental Pediatrics, 2026)