We are organising a conference between the 17th and 21st of June, 2019, in Leiden, celebrating Aad van der Vaart’s contributions to statistics on the occasion of his 60th birthday.  If you are interested in participating, please register as soon as possible on the conference webpage:
http://pub.math.leidenuniv.nl/~schmidthieberaj/aadbirthday/index.html
The conference fee is 200 euro, which includes the welcome reception on Monday afternoon, and sandwich lunch, coffee and tea during the conference.