<https://itstudie.com/#/schema/person/image/>
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<https://secure.gravatar.com/avatar/f97ff1e7697c4b517f8e2a5eb8733a99?s=96&d=mm&r=g>
<https://itstudie.com/2021/09/02/ontwikkelen-en-implementeren-van-informatiesystemen/>