https://www.guysandstthomas.nhs.uk/health-information/halo-radiofrequency-ablation
HALO radiofrequency ablation (RFA) - Overview | Guy's and St Thomas' NHS Foundation Trust
HALO radiofrequency ablation (RFA) uses radiowaves to destroy abnormal areas of cells (dysplasia) in the lining of your food pipe (oesophagus).
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