Biomedcentral.com offers a variety of open access, high quality journal articles that can supplement the student's reading. These articles are licensed as CC-BY which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Conduct a search for more open access articles here. See below for examples of a few titles that came up in a search.
Library eBooks available for this topic are listed below. Library materials are not strictly OER, but may get you over having to use a textbook while you work on putting together true OER to develop your own book.
To access these books, login using:
Borrower ID=Student ID (PID for Employees)
PIN=MMDD( Month and Day of Birth for all)