The researcher is responsible for obtaining ethical approval before data collection. Most journals also ask for ethical/research approvals once you submit your manuscript (please note that you cannot ask for ethical approval afterwards). Moreover, according to Dutch law, you need ethical approval of a medical ethical committee if your research falls under the WMO law.
The first step is to decide whether your research falls under the WMO or not. The CCMO website describes when this is the case:
The study falls under WMO if:
Study falls under WMO
If you think your research falls under the WMO, then submit it to an accredited ethical review committee. Be aware that regulations may depend on local requirements. For example, if the study is performed in MUMC+, it needs to be approved by the ethical committee of the MUMC+.
In case of doubt: the following website http://www.ccmo.nl/en/help-me-on-my-way helps you to decide.
Also do not hesitate to contact the ethical review committee of MUMC+ (http://www.ccmo.nl/en/accredited-mrecs/academisch-ziekenhuis-maastricht-universiteit-maastricht) or the CCMO (http://www.ccmo.nl/en/contact).
Study does not fall under WMO
If you think your study does not fall under the WMO, you could consider to go to the ethical review committee of FHML (contact person David Townend https://www.caphri.nl/profile/d.townend). The committee will give advice whether indeed the proposed study falls under the WMO or not. If so, they will redirect you to an accredited ethical review committee. If not, they will review it themselves.
Please note that the exact forms that you have to complete differ per committee. The ethical review committee of FHML requires less information. However, if they redirect you to another ethical review committee, then you still have to provide that other committee with all information according to their procedures. So, the ethical review committee of FHML should not be seen as a simple procedure (because they are not allowed to judge research that falls under the WMO law, and they require different information anyway).