TY - JOUR AU - Guo, Wenjia AU - Zhou, Qi AU - Xu, Jiancheng PY - 2020 TI - Negative results in nucleic acid test of COVID-19 patients: assessment from the perspective of clinical laboratories JF - Annals of Palliative Medicine; Vol 9, No 6 (November 30, 2020): Annals of Palliative Medicine Y2 - 2020 KW - N2 - UR - https://apm.amegroups.org/article/view/51706