Comparison between enzyme-linked immunospot assay and intracellular cytokine flow cytometry assay of cytomegalovirus-specific T-cell response in healthy participants - Chompunuch Klinmalai; Nopporn Apiwattanakul; Somsak Prasongtanakij; Jackrapong Bruminhent; Supanart Srisala (PLoS ONE, 2026)