User talk:Mammoth40

This is your only warning; if you vandalize Wikipedia again, as you did at Timeline of medicine and medical technology, you may be blocked from editing without further notice.

May 2018
Hello, I'm Pkbwcgs. I wanted to let you know that I reverted one of your recent contributions —specifically this edit to Timeline of medicine and medical technology— because it did not appear constructive. If you would like to experiment, please use the sandbox. If you have any questions, you can ask for assistance at the Help Desk. Thanks. Pkbwcgs (talk) 18:39, 29 May 2018 (UTC)

May 2018
You have been blocked indefinitely from editing for persistent vandalism. If you think there are good reasons for being unblocked, please read the guide to appealing blocks, then add the following text below the block notice on your talk page:. Widr (talk) 18:46, 29 May 2018 (UTC)