@ARTICLE{
author={Voormolen Daphne C|,Haagsma Juanita A|,Polinder Suzanne|,Maas Andrew IR|,Steyerberg Ewout W|,Vulekovic Petar|,Sewalt Charlie A|,Gravesteijn Benjamin Y|,Covic Amra|,Andjelic Nada|,Plass Anne Marie|,Von Steinbuechel Nicole|},
year={2019},
title={Post-Concussion Symptoms in Complicated vs. Uncomplicated Mild Traumatic Brain Injury Patients at Three and Six Months Post-Injury: Results from the CENTER-TBI Study},
journal={JOURNAL OF CLINICAL MEDICINE},
volume={8},
number={11},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Brankovic Milos|,Kardys Isabella|,Steyerberg Ewout W|,Lemeshow Stanley|,Markovic Maw|,Rizopoulos Dimitris|,Boersma Eric|},
year={2019},
title={Understanding of interaction (subgroup) analysis in clinical trials},
journal={EUROPEAN JOURNAL OF CLINICAL INVESTIGATION},
volume={49},
number={8},
pages={-},
document_type={Review},
}