Sihombing YR, Romauli Anna Teresia Marbun, Lenni Rismayanti, Ratih Anggraeni, Octavian Ashido Nababan, Kristian Cahayani Zebua. Comparison Of Naso Faring And Oro Pharynx Swab Samples On Positivity Rate For Covid – 19 With The Reverse Transcription Method Pcr (Rt–Pcr) In The Lab. Rsud Pcr. City Padang Sidempuan. JFM [Internet]. 2024 Apr. 30 [cited 2024 Nov. 22];6(2):106-14. Available from: https://ejournal.medistra.ac.id/index.php/JFM/article/view/2021