ERX6712824 COG-UK/PHEP-YYBY4HC/PHEC:20211008_1539_X4_FAR64485_39523163 ERP121228 PRJEB37886 ERS8084249 SAMEA10431424 AMPLICON VIRAL RNA PCR LSK109|Ligation GridION artic_primer_version ARTIC v3 artic_protocol_version ARTIC v3 (LoCost)