Crawl all posts having the word "immunotherapy" or "immunotherapies". The result will be saved as a HTML and an Excel file (.csv).
The Excel file has 5 attributes:
- post_id: the ID number of the post
- username: the username of the account uploaded the post
- date: uploading time of the post
- state: if "immunotherapy" or "immunotherapies" in the post: "Yes" else: "No"
- content: the content of the post