The CRO Diagram employs experienced research professionals who have accumulated appropriate competencies in order to carry out their tasks within the sphere of development, coordination and the execution of scientific research.

Our research professionals have expertise within the following therapeutic areas:

  • Intervention cardiology
  • Electrophysiology
  • General cardiology
  • Cardiovascular diseases in women
  • Thorax surgery
  • Lung illnesses
  • General practice

Distinctive character

The above therapeutic areas correspond to several specialties. Our research professionals have a high level of knowledge about the specialty itself including the whole care-chain (general practicioners, regional ambulance services, hospitals and cardiac rehabilitation).

In addition, Diagram plays a leading role in trials that investigate new technological developments, such as e-Health, in a scientific setting.

Type of research

Over the past few years, Diagram has accumulated experience in:


  • National and international
  • Single centre and multicentre

Law and regulations

Diagram bears the responsibility for conducting scientific research or registrations according to the appropriate guidelines: ICH-GCP, ISO 14155, FDA and/or Dutch law and regulations.


Since its establishment, Diagram has always prioritised quality and complies with the ISO 9001 standard in order to ensure that all work is consistent with client specifications, the relevant legislation and regulations, as well as the requirements of the organisation itself. Diagram has acquired NEN-EN-ISO 9001:2015 certification as a result.