A Point-of-Care Based on Label-Free Interferometric Optical Detection Method to Evaluate Interferon Gamma (IFN-γ): A Correlation with the ELISA Technique. - María F. Laguna; Yolanda Ramírez; Celia Fernández Martín; Rocío L. Espinosa; Álvaro Lavín; Miguel Holgado (Sensors, 2020)