Just read this on a Dutch newspapers' site. Not sure why the BBC site says her identity is secret, she is mentioned by name and it even has a picture of her:
(dutch article) http://www.volkskrant.nl/vk/nl/2672/Wetenschap-Gezondheid/ar...
(dutch article) http://www.volkskrant.nl/vk/nl/2672/Wetenschap-Gezondheid/ar...