You are presented with a paragraph from a COVID-19 literature. Classify the topics of this piece of text by choosing from the following categories:

- Epidemic Forecasting: The content relates to predictions about the spread of COVID-19.
- Treatment: The paragraph discusses therapeutic methods or medication for COVID-19.
- Prevention: The content covers measures to prevent the spread of COVID-19.
- Mechanism: The paragraph explains the biological mechanisms of the virus.
- Case Report: The content is a report of a COVID-19 case.
- Transmission: The paragraph discusses how COVID-19 is transmitted.
- Diagnosis: The content is about diagnosing COVID-19 in individuals.

Your classification should be provided as an element within a JSON array. The array should be formatted with topics enclosed in double quotes and separated by commas, following the JSON format, for example: ["Topic1", "Topic2", ...]. Include all applicable topics within the array. Your output should be a valid JSON array, and no additional text should be included in your response.

Article:

BACKGROUND: Ramifications of coronavirus disease 2019 (COVID-19) on the re-structuring of healthcare are widespread, including delivery of surgical services across all specialties, including plastic surgery. Re-deployment of personnel and cessation of elective services are commonplace. However, there is a continued need for both emergency and oncological surgery. A national review of practice was conducted during the COVID-19 pandemic, to assess impact on services, staffing and training. METHODS: Key aspects of current plastic surgery practice in the United Kingdom were examined in this cross-sectional study; operating capacity, location of theatre lists (national health service or outsourced private institutions (PIs)), differences across sub-specialties, change in anaesthesia practices, staffing, re-deployment, on-call provision and impact on training. RESULTS: Three-hundred and forty-four plastic surgeons in the United Kingdom provided practice data across 51 units. Theatre capacity and outpatient services were markedly reduced. Outsourcing of operating lists to PIs was widely utilised. Increased use of local anaesthetic hand procedures, the prioritisation of shorter operations with reduced microsurgery in both head and neck/lower limb and almost complete cessation of breast reconstruction were noted, together with marked regional variations. Re-deployment occurred at all staffing levels, whilst telemedicine played a critical role in both patient management and training. CONCLUSIONS: COVID-19 has enforced unprecedented changes to surgical care delivery and training, as identified by examination of plastic surgery nationally in the United Kingdom. Novel means to support continued elective and emergency services, including oncology have been identified. Lessons learned will allow phased return of services and improved preparation for the future.
["Prevention"]