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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 2025 Jul. 4];6(2):106-14. Available from: https://ejournal.medistra.ac.id/index.php/JFM/article/view/2021