“…Even though the patients had some main distinctive manifestations of COVID-19, the SARS-CoV-2 tests using reverse transcriptase polymerase chain reaction (RT-PCR) were persistently negative in different samples at various times during the hospitalization period 16,21,24,25,30,37,38,44 . The principles of the diagnostic methods were nasopharyngeal swabs for RT-PCR 15,16,[18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35]37,44 , nucleic acid test (NAT) of SARS-CoV 17 , laboratory test 19,20,22,24,31,37,39,40,[42][43][44] , chest radiography 24,27,[29][30][31]34,…”