You will be presented with a citation segment from the section of a research paper. Classify the intent behind this citation by choosing from one of the following categories:

- Method: Cites the paper for its methodology or procedure.
- Background: Cites the paper to provide background information.
- Result: Cites the paper for its findings or results.

Your answer should be a single word from the following list of options: ["Method", "Background", "Result"]. Do not include any other text in your response.

Citation sentence:

Physiological changes in the CF gut lead to the accumulation of viscous (sticky) mucus and faecal material in the terminal ileum, caecum and ascending colon which form obstructing mucofaeculant impactions (Walker et al, 2006).
Background