You can find the letter in PDF here.
For a list of universities that have acted, and their annoucements, see this list.
Prof. Marcel Salathé, EPFL, Geneva, Switzerland
PD Dr. Christian L. Althaus, University of Bern, Switzerland
Prof. Jacques Fellay, EPFL, CHUV & UNIL, Lausanne, Switzerland
Prof. Richard Neher, University of Basel, Switzerland
Dr. Emma Hodcroft, University Basel, Switzerland