%0 Letter %T Development of immediate and chronic spontaneous urticaria following mRNA COVID-19 vaccination: Tolerability of revaccination and immunological study. %A Teo RXW %A Leung BPL %A Thong BY %A Tan JWL %A Chan GYL %A Lim XR %J Ann Acad Med Singap %V 53 %N 1 %D 2024 Jan 30 %M 38920217 %F 8.713 %R 10.47102/annals-acadmedsg.2023249