Antibody Response to a Fourth Dose of SARS-CoV-2 Vaccine in Solid Organ Transplant Recipients: An Update. Issue 7 (15th April 2022) - Mitchell, Jonathan; Alejo, Jennifer L.; Chiang, Teresa P.Y.; Kim, Jake; Chang, Amy; Abedon, Aura T.; Avery, Robin K.; Tobian, Aaron A.R.; Massie, Allan B.; Levan, Macey L.; Warren, Daniel S.; Garonzik-Wang, Jacqueline M.; et al.