WEBVTT Chapter 1 00:00:15.000 --> 00:03:09.000 Introductin de Nathalie Chusseau Chapter 2 00:03:09.000 --> 00:48:16.000 Conférence de François Bourguignon Chapter 3 00:48:16.000 --> 1:18:37.000 Conférence de Nathalie Chusseau Chapter 4 1:18:37.000 --> 01:59:21.000 Discussion