Dear Friends and Colleagues,
WorldSleep2015 hosted by the European Sleep Research Society is now over, and we wish to personally thank all of you for your tremendous contribution in making this "Sleep and Health" meeting a true success.

In spite of the Election Day and unfavourable rumours, nearly 1100 participants have gathered in Istanbul to meet, exchange experience and learn about the latest news and state-of-the art in sleep research and sleep medicine. Five parallel tracks ensured that there was a keynote, a symposium, a teaching course, an oral, video or poster session worth to attend for each one of you, at each hour of the day. Also, the beautiful city of Istanbul has been welcoming as ever, with many opportunities to enjoy.

A big thank you to all for attending this meeting and helping the European Sleep Research Society to make an achievement of the last official meeting of the World Sleep Federation.
What makes the success of a scientific meeting is the quality of the participants, and even more so of those who generously share their knowledge. Warmest congratulations to all speakers and poster presenters, and a special mention must be made here for all those of you who have accepted, often at very short notice, to replace a missing speaker, and consistently came up with first class quality material. We are incredibly proud to count such supporting players among us, and that the ESRS can rely on so many friends.

We also thank the Turkish Sleep Medicine Association for their hospitality, and last but not least, our PCO Congrex for their excellent and hard work.
One meeting hardly finished, we are already preparing the next one. We are quite sure that it will be even more attractive and enjoyable. Please mark your calendar from now and join us for the 23rd Congress of the European Sleep Research Society, to be held from 13th to 16th of September 2016 in the superb city of Bologna.
With our warmest regards, and looking forward to see you soon again,

Philippe Peigneux
ESRS President
Lino Nobili
ESRS Secretary, Chair of the WorldSleep 2015 Host Organising Committee
Pierre-Herve Luppi
ESRS Basic Vice-President, Chair of the WorldSleep 2015 Host Programme Committe