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PhD students

Pia Todtenhaupt

Sophie Groene is a researcher in training. After obtaining her Bachelor in Medicine, where she had already developed an early interest in Pediatrics, she started a PhD focused on monochorionic twins at the Department of Neonatology in the LUMC. Currently, she is responsible for the coordination and the clinical aspects of TwinLife, including contact with parents.

Pia Todtenhaupt is a researcher in training at the Department of Biomedical Data Sciences in the LUMC. Together with Sophie, she is responsible for the coordination of TwinLife. She obtained her Masters degree in Medical Biology at Radboud University in Nijmegen in 2018. Within this Master, she specialized in the field of Epigenetics.


Sophie Groene


Department of Biomedical Data Sciences

Dr. Bas Heijmans is an Epigeneticist in the LUMC. Together with his team, he investigates how environmental factors can influence our DNA and cause health differences. He is very curious if this is the reason that identical twins are not 100% the same and whether we can use this knowledge to lend vulnerable twins a helping hand.

Dr. B.T. Heijmans


Afdeling Kindergeneeskunde


Department of Pediatrics

Dr. J.M.M. van Klink

Dr. A.A.W. Roest

Prof. Dr. E. Lopriore

Enrico Lopriore is a professor of Neonatology and head of the Department of Neonatology in the LUMC. His research focuses on discovering the origin of diseases in the fetal phase and the short and long-term consequences, especially in complicated monochorionic twins. He is part of an (uncomplicated) twin set as well.

Jeanine van Klink is a Pediatric Psychologist and researcher at the Department of Pediatrics in the LUMC. Her research focuses on children's long-term neurodevelopment, especially identical twins who have experienced a difficult start, for example after fetal therapy, prematurity, or with a low birth weight.

Dr. Arno Roest is a Pediatric Cardiologist in the LUMC. His research focuses on non-invasive imaging of the heart and blood vessels, with for example, echocardiography and MRI. He performs MRI examinations in children with complex congenital heart defects, but he is also very interested in how certain factors before and after birth can influence the risk of having a heart attack later in life.


Department of Obstetrics

Dr. M.C. Haak

Dr. Monique Haak is a Gynecologist-Obstetrician in the LUMC. She is specialized in prenatal diagnostics and fetal therapy, especially for congenital heart defects. Pregnancy and birth are two of the most impressive occurrences in a human life. If there are worries about the health of an unborn child, she believes it is important to optimally support parents in this unsure period.