Guests

Ronald B. Geskus, PhD

Ronald Geskus is Professor at the University of Oxford and head of the biostatistics group at the Oxford University Clinical Research Unit (OUCRU) in Ho Chi Minh City, Vietnam. OUCRU is a research institute completely focused on the study of infectious diseases.

After his PhD in mathematical statistics in 1997, he worked as senior statistician at the Public Health Service of Amsterdam, where specialized in the analysis of data on HIV and sexually transmitted diseases. Besides, he worked in several (medical) statistical research groups in the Netherlands, most notably at the UMC Amsterdam. In 2017 he joined OUCRU.

His research interests include: i) models for complex time-to-event data (competing risks, multi-state models) ii) models for complex longitudinal data, iii) prediction based on time-updated marker values, iv) causal inference v) infectious diseases.

Ronald’s homepage OUCRU | Ronald’s homepage University of Oxford

Eni Musta, PhD

Eni Musta is Assistant Professor in the Statistics group of the Korteweg-de Vries Institute for Mathematics at the University of Amsterdam. Her research focuses on survival analysis, non- and semi-parametric estimation methods and shape constrained statistical inference. Currently she is working on the development of new methodologies within the framework of cure rate models for dealing with survival data in the presence of long-term survivors or cured patients.

Eni is also interested in applications of statistical methods in the medical field and has recently started a collaboration with Leiden University Medical Center, Princess Máxima Center for Pediatric Oncology (Utrecht) and University College London Hospitals (UK) on the project "Long term survival after childhood osteosarcoma: cure models".

Eni's homepage | Eni's Google Scholar profile

Euloge Clovis Kenne Pagui, PhD

Euloge Clovis Kenne Pagui is a mathematician (PhD in Statistics, 2013, University of Padova, Italy), working as a researcher at Oslo Centre of Biostatistics and Epidemiology, Oslo, Norway. He is currently involved both in the PRIME-ROSE project to construct suitable synthetic control arms for assessing the treatment effect (WP2), and the second project is to construct a single control arm in non-randomized clinical trial from multiple control arms using meta analyses.

His research interests include: inference in observational studies; prediction of gene mutation in cancer field; sample size calculation in case-controls studies; methodological methods for construction of synthetic control arms; mean and median bias reduction of the maximum likelihood estimator.

Salvatore Battaglia, PhD

Salvatore Battaglia works at the department of Economics, Business and Statistics of University of Palermo. His research deals with applications and new methodologies in survival analysis, especially in presence of competing risks. He is working on Vertical Model in the presence of random effects, with application on Emergency Department data to analyze the overcrowding. He is also a research team member of the Gastroenterology department of University of Palermo, specializing in analysis of Hepatocellular Carcinoma and, in general, liver diseases.

Guest visiting periods at the Mathematical Institute of Leiden University: October 2023; from February to July 2022.

Salvatore's LinkedIn page

Marta Cipriani, MSc

Marta Cipriani is a PhD candidate and the Department of Statistical Science of Sapienza University of Rome. Her research focuses on the development of innovative methodologies in survival analysis and clinical trials. Marta's work covers a wide variety of topics, ranging from the use of pseudo-observations to recover censored data in survival analyses to the exploration of flexible parametric approaches for generating synthetic patient cohorts.

During her visiting period at the Mathematical Institute of Leiden University, she worked on mixture cure models, with a specific focus on multiple imputation techniques for handling missing covariates in such models. She is particularly interested in the application of these models to childhood oncology.

Marta’s LinkedIn page | Marta’s Google Scholar profile

Richard Evenhuis, MD PhD

Richard Evenhuis got his PhD on May 14th, 2025 at the Department of Orthopaedic Surgery at the Leiden University Medical Center (LUMC) under the supervision of Prof. M.A.J. van de Sande (orthopaedic surgeon), Prof. M. Fiocco (medical statistics), and Dr. M.P.A. Bus (resident orthopaedic surgery).
His research focused on diagnostics and prognostics in patients with (malignant) bone tumours. Moreover, the aim of his PhD was to set up an international research collaboration on MUTARS mega-prosthesis used for the reconstruction of osseous defects after resection of a bone tumour. Main topics of the research were to evaluate implant survival, complications, and identifying risk factors for complications and related implant revision. The ultimate goal was to enhance the quality of oncological orthopaedic implants and elevate the standards of orthopaedic oncological care.

Richard is currently specialising in orthopaedic surgery at LUMC.

Doctoral Thesis: Evenhuis R (2025, May 14). Advances in diagnosis, prognosis and reconstructive procedures in orthopaedic oncology

Richard’s LinkedIn page | Richard’s ORCiD profile

Mirjam van den Brink, MD PhD

Mirjam van den Brink got her PhD on April 12th, 2024 at the Maastricht University under the supervision of prof. dr. Marta Fiocco (Mathematical Institute Leiden University & Princess Maxima Center for Pediatric Oncology), prof.dr. Remco Havermans (Maastricht University), and prof. dr. Wim Tissing (Groningen University & Princess Maxima Center for Pediatric Oncology)

Her PhD research in collaboration with the Princess Maxima Center for Pediatric Oncology (Utrecht) focused on getting insight into chemotherapy-induced smell and taste changes among pediatric oncology patients and its possible consequences regarding food intake, eating behaviour, nutritional status, and quality of life.
Results has been published for a general public in the Dutch AD journal: ''Cola smaakt naar kots" | "Coke tastes like puke".

Doctoral Thesis: van den Brink M (2024, April 12). The flavor of chemotherapy: Exploring smell and taste function in children with cancer.

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