Should I include research stays in my CV? During my PhD I was invited three times by two researchers to stay and do research in their lab, one week at a time. I'm now a postdoc and applying to tenured jobs in Europe (yay). Should I include these stays in my CV for these job applications?

To be fair most of the deadlines have already gone for these applications. Someone just mentioned to me that they did that so I'd like more opinions on this. To be even more fair I'm pretty sure I will still need the advice next year. (Some more research stays are coming up, also.)
Yes, listing them would add some more value to the CV.

This is how I would list it in my CV under a section called Research Visits.

Research Visits


Visiting researcher, ABC Laboratory, University of Alphabets (Duration: January 01 -- January 09, 2018; Supervisor/Collaborator: Professor A. BCDEG)
Visiting researcher, ABC Laboratory, University of Alphabets (Duration: January 23 -- January 30, 2018; Supervisor/Collaborator: Professor A. BCDEG)