The ClinicalKey platform has a significant number of ebooks. You may read them online, either from your computer or mobile device, or you may download pdf book chapters. However, in order to download a PDF you will need to create a personal account with Elsevier/ClinicalKey. If you are prompted to create a personal account, choose any credentials you wish - as long as you don't use your DMU password. This is a personal account and is not connected to your work or studies at DMU.
The only exception to the PDF download rule is with medical education books. Any book Elsevier decides is a Med Ed title can only be viewed online. You will see the pdf button grayed out.