Which journals offer discounts for KI researchers when publishing articles open access?

BioMed Central and SpringerOpen
As a KI researcher you get a 15% discount off the publishing fee if you publish your article open access at BioMed Central and SpringerOpen. If you submit your article from a computer within the KI network, BioMed Central will recognize your IP address and the discount will be automatically deducted. The publishing fees vary among the different BioMed Central and SpringerOpen journals.

BMJ Open 
Reviewers  for BMJ Open, that returns a full review, on time, can receive a 25% discount on the APC for a paper for which they are the corresponding author.

Bone & Joint Research (BJR)
Reviewers  for BJR, that returns a full review, on time, can receive a 10% discount on the APC for a paper for which they are the corresponding author.

British Journal of Cancer
As a KI researcher you pay GBP 1700 instead of 2300 when you publish your article as BJC Open.

Landes Bioscience
Researchers at Karolinska Institutet are entitled to 25% discount on the publication fees for Open Access articles published in LandesBioscience journals.

PNAS
If you choose to publish your article open access with PNAS (Proceedings of the National Academy of Sciences), you will pay $950 instead of $1275. You will have to inform PNAS that you are a KI researcher to get the discount.

Mary Ann Liebert
If you choose to publish your article open access with Mary Ann Liebert, you will receive a 50% discount on the publishing fee ($3000). You will have to inform PNAS that you are a KI researcher to get the discount.

Nucleic Acids Research - NAR
As a KI researcher you get a 50% discount off the publishing fee ($2770) if you publish your article open access in NAR. If you submit your article from a computer within the KI network, NAR will recognize your IP address and the discount will be automatically deducted.