Singh, Dr Jaspreet, Dr Samantha Robinson, Stacy Deckard MLS (ASCP), Dr Arjun Dang, & Dr. Binish Jawed. " Is a negative COVID-19 RT-PCR enough to rule out COVID-19? –A case series." Medical Research Archives [Online], 11.12 (2023): n. pag. Web. 21 Nov. 2024