RT Journal Article SR Electronic T1 Failure to mount a humoral response to COVID-19 vaccination identifies individuals with previously undiagnosed severe antibody deficiency state: preliminary data from the COVID-19 ENLIST study JF Future Healthcare Journal JO Future Healthc J FD Royal College of Physicians SP 25 OP 26 DO 10.7861/fhj.9-2-s25 VO 9 IS Suppl 2 A1 Mark Ponsford YR 2022 UL http://www.rcpjournals.org/content/9/Suppl_2/25.abstract AB