References: 1. U.S. National Library of Medicine. DailyMed: Advanced Search. Indication And Usage Section (34067-9). https://dailymed.nlm.nih.gov/dailymed/search.cfm? adv=1&labeltype=all&pagesize=200&page=1&query=34067-9%3A%28merkel+cell+carcinoma%29+. Accessed March 28, 2021. 2. Referenced with permission from the NCCN Clinical Practice Guidelines in Oncology (NCCN Guidelines®) for Merkel Cell Carcinoma V.1.2021. © National Comprehensive Cancer Network, Inc. 2021. All rights reserved. Accessed May 20, 2021. The NCCN Guidelines® and illustrations herein may not be reproduced in any form for any purpose without the express written permission of NCCN. To view the most recent and complete version of the guidelines, go online to NCCN.org. NCCN makes no warranties of any kind whatsoever regarding their content or its use or application and disclaims any responsibility for its use or application in any way.