DOI: 10.1055/s-00000012

Endoscopy

References

Shrotri M, Navaratnam AMD, Nguyen V. et al.
Spike-antibody waning after second dose of BNT162b2 or ChAdOx1.

Lancet 2021;
398: 385-387
DOI: 10.1016/S0140-6736(21)01642-1.

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