TY - JOUR AU - Marques, José Gonçalo PY - 2021/11/02 Y2 - 2024/03/29 TI - The EU Digital COVID Certificate: Should We Differentiate Between Previously Infected and Fully Vaccinated People? JF - Acta Médica Portuguesa JA - Acta Med Port VL - 34 IS - 11 SE - Letters to the Editor DO - 10.20344/amp.16830 UR - https://actamedicaportuguesa.com/revista/index.php/amp/article/view/16830 SP - 803-804 AB - N/a. ER -