first version of protocol converted from word doc

Description

This is the first version of an already exisiting protocol. It was converted from word doc.

Steps by contributor:

[x] Add description to this pull request (under "## Description")
[ ] Open the dropdown (triangle) near 'create pull request' and choose 'Create draft pull request'
[x] Check for potential problems by running protocolhelper::check_frontmatter() and address them
[x] Check for potential problems by running protocolhelper::check_structure() and address them
[x] Add further commits if needed and push them to GitHub
[x] Update the protocol-specific NEWS.Rmd
[x] Mark the pull request as 'ready for review'

Review steps for the author(s):

[x] Add reviewers, at least one subject-matter specialist and one administrator
[ ] Wait for review comments and address them
[ ] Iterate until reviewer approvals (merging the pull request will be done by an administrator)
[ ] Verify that the checks done by continuous integration succeeded. These will check if protocolhelper::check_frontmatter() and protocolhelper::check_structure() succeeded without errors.

To be done by an administrator after review: see guidelines for admins.