NCCN Get Patient Guideline

Fetch content from a specific NCCN Guidelines for Patients page. Takes a URL obtained from NCCN_list_patient_guidelines and scrapes the page for title, content sections, and PDF download links. Returns the guideline page content organized by sections. Note: NCCN patient guidelines are educational summaries; for full professional guidelines, use NCCN_search_guidelines to find JNCCN publications.