Research Assistants & Nurses


Barbara Elsenga

Barbara started her career in healthcare at one of the Amsterdam hospitals where she worked as management assistant. It was here where her interests in the more practical side of healthcare developed, which moved her to obtain a degree as a medical assistant. During the following years she has been working on and off in- and outside of healthcare. She never lost her appeal to healthcare though and as of 2001 she has been specializing as assistant in various departments, such as the operating room and the clinical laboratory. After working multiple years at several of the Emergency Care Units of the AMC, she started working for the AGEhIV Cohort Study as an all-round research assistant in November 2010.

Ivette Agard

Ivette Agard was born in Paramaribo – Suriname, and graduated there as a nurse and intensive care nurse. Afterwards, she worked at the Academic Hospital Paramaribo. As of 1986 she worked at different departments of the Amsterdam UMC location VUmc: intensive care units (acute internal medicine, neurosurgery and surgery), outpatient clinics of surgery and anaesthesiology (as a nurse and later as a team manager). Since January 2019 she has been working as a research nurse for the AGEIV Cohort Study.



Peter Reiss

(principal investigator)

Peter Reiss is the initiator and Principal Investigator of the AGEhIV Cohort Study. He has studied medicine at the University of Amsterdam. After his training in Internal Medicine at the OLVG Hospital in Amsterdam, he specialized in Infectious Diseases at the University Hospital of Leiden. As of 1987 he has been affiliated with the Academic Medical Center (AMC), currently as staff member of the Global Health Division and the Division of Infectious Diseases. 2006 he received the title of professor of Internal Medicine, specializing in the complications of the treatment of HIV infection. From 2013 he has been director of the dutch HIV Monitoring Foundation.

Maria Prins

(principal investigator)

Maarten Schim van der Loeff

After completing his medical studies at the VU medical center, Maarten Schim van der Loeff worked as a tropical doctor in Zambia and the Gambia. He studied epidemiology at the London School of Hygiene & Tropical Medicine. In 2003 he obtained his PhD at the University of Amsterdam. His PhD research focused on HIV-2, an HIV subtype mainly present in West Africa. Since 2005 he is associated with the AMC as a principal investigator and since 2008 he works at the GGD Amsterdam. His research focuses on sexually transmitted infections, for example gonorrhea, chlamydia, HPV, and HIV.


Eveline Verheij

Eveline Verheij studied medicine at the Academic Medical Center (AMC) in Amsterdam. After her graduation she has worked as resident in Internal Medicine at the Haga Hospital in the Hague. From 2016 she has been working as study coordinator and PhD candidate for the AGEhIV Cohort Study.


Sebastiaan Verboeket

Sebastiaan Verboeket completed his medical studies at the Academic Medical Center (AMC) in Amsterdam. After receiving his degree, he has worked as a medical resident at the Intensive Care department of the Red Cross Hospital in Beverwijk, and later at the Intensive Care department of the VU medical center in Amsterdam. As of October 2016 he has been working for the Amsterdam Institute for Global Health and Development (AIGHD) and the AMC hospital as a PhD candidate and study coordinator for the AGEhIV Cohort Study.

Myrthe Verburgh

Myrthe Verburgh studied medicine at the Amsterdam UMC, location AMC, in Amsterdam. After her graduation, she worked as resident in Internal Medicine at Tergooi Hospital in Hilversum. Since February 2020 she has been working as study coordinator and PhD candidate for the AGEhIV Cohort Study.

AGEhIV Study Group

Scientific oversight and coordination

Amsterdam University Medical Centers (AUMC), University of  Amsterdam (UvA), Department of Global Health, en Amsterdam Institute for Global Health and Development (AIGHD)
P. Reiss, F.W.N.M. Wit, M. van der Valk, E. Verheij, S.O. Verboeket, M.L. Verburgh, B.C. Elsenga

Public Health Service Amsterdam, Department of Infectious Diseases
M. Prins, M.F. Schim van der Loeff, A. Boyd, L. del Grande, I. Agard


HIV Monitoring Foundation
S. Zaheri, M.M.J. Hillebregt, Y.M.C. Ruijs, D.P. Benschop, A. el Berkaoui

Project management and administrative support

Amsterdam Institute for Global Health and Development (AIGHD)
W. Zikkenheiner, S. Nolst Trenité

Central laboratory support

UAMC, UvA, Laboratory for Viral Immune Pathogenesis and Department of Experimental Immunology
N.A. Kootstra, A.M. Harskamp-Holwerda, I. Maurer, M.M. Mangas Ruiz, A.F. Girigorie, B. Boeser-Nunnink

Participating HIV physicians and nurses

UAMC, Division of Infectious Diseases
S.E. Geerlings, A. Goorhuis, J.W.R. Hovius, F.J.B. Nellen, T. van der Poll, J.M. Prins, P. Reiss, M. van der Valk, W.J. Wiersinga, M. van Vugt, G. de Bree, B.A. Lemkes, F.W.N.M. Wit; J. van Eden, A.M.H. van Hes, F.J.J. Pijnappel, A. Weijsenfeld, F.J.J. Pijnappel, S. Smalhout

Other Collaborators

AUMC, Department of Cardiology
J. de Jong, P.G. Postema

AUMC, Division of Endocrinology and Metabolism
P.H.L.T. Bisschop, M.J.M. Serlie

AUMC, Division of Endocrinology and Metabolism
P. Lips

AUMC, Department of Gastroenterology
E. Dekker

AUMC, Division of Geriatric Medicine
N. van der Velde

AUMC, Division of Nephrology
J.M.R. Willemsen, L. Vogt

AUMC, Department of Neurology
J. Schouten, P. Portegies, B.A. Schmand, G.J. Geurtsen

AUMC, Department of Ophthalmology
F.D. Verbraak, N. Demirkaya

AUMC, Department of Psychiatry
I. Visser

AUMC, Department of Psychiatry
A. Schadé

AUMC, Department of Medical Psychology
P.T. Nieuwkerk, N. Langebeek

AUMC, Department of Pulmonary Medicine
R.P. van Steenwijk, E. Dijkers

AUMC, Department of Radiology
C.B.L.M. Majoie, M.W.A. Caan, T. Su

AUMC, Department of Gynaecology
H.W. van Lunsen, M.A.F. Nievaard

AUMC, Division of Vascular Medicine
B.J.H. van den Born, E.S.G. Stroes

HIV Vereniging Nederland
S. van Oorsponk

HIV monitoring
GGD Amsterdam
Amsterdam UMC-AMC