I am an author - where can I find the past reviewer comments?

If your paper has been peer-reviewed, you will receive an email with the editorial decision as well as the reviewer comments. If you have not received this email, check your spam folder, or go to the author homepage, and click on the manuscript title (if you do not see your manuscript, make sure you are logged in with the user account of the submitting author, see I can't find my submitted manuscript?). After clicking on the manuscript title, check the "Review" tab and click on the link "Editor/Author Email Record". The past editorial correspondence including reviewer comments (as well as editorial comments) are at the end of the decision emails. 

Related:

• I can't find my submitted manuscript?
• As author, how do I respond to reviewer comments and upload a revised manuscript?
• I am not receiving your emails (have not received a decision email, acceptance email, copyediting request, proofreading request, content alerts...)