What do you call an academic who puts their name on an article they didn't write? In the medical domain, it frequently happens that papers are written by a pharma company or it's contractors and then given to an academic to publish.

The word "ghostwriter" seems to be appropriate for the person who actually wrote the paper. What's the best word to describe the person who is officially the first author of such a paper but who had little input in it's writing? I'm searching for a specific word to categories the behavior.
Phrases like "guest author", "honorary author", or "courtesy author" have been used to describe this practice.  

References:


See use of "guest author" here: Legal Remedies for Medical Ghostwriting: Imposing Fraud Liability on Guest Authors of Ghostwritten Articles 
"honorary author" Challenging Medical Ghostwriting in US Courts