http://www.unimaas.nl Universiteit Maastricht

http://www.hag.unimaas.nl Huisartsgeneeskunde Universiteit Maastricht

http://www.kuleuven.ac.be/kuleuven/ Universiteit Leuven

http://www.ifcc.org/divisions/emd/c-eblm/ceblm.asp Committee on Evidence-based Laboratory Medicine of the International Federation of Clinical Chemistry

http://www.ifcc.org/divisions/emd/c-eblm/database.asp a Systematic Reviews database in the field of laboratory medicine