Acknowledgments
We thank D. van der Laan and M. Pistorius, of the hospital pharmacy
department of the Amsterdam Academic Medical Center, for analyzing the
included blood samples and providing us the data to investigate our
research question. Also, we thank the participants of the B-PROOF study
for their enthusiasm and cooperation. Furthermore, we thank the
dedicated team that conducted the study. Especially, A.C.Ham,
A.W.Enneman, R.Dhonukshe-Rutten, P Lips and J.van Wijngaarden.