A free subscription with unique log-in information was sent through an exclusive email invitation to 5,000 of the randomly selected students, while the other 5,000 students were in the control group and did not have a subscription.
Eng Gratis-Abonnement mat eenzegaartege Log-in Informatioun gouf duerch e exklusive E-Mail-Invitation un 5.000 vun de random ausgewielten Studenten geschéckt, während déi aner 5.000 Studenten an der Kontrollgruppe waren an net hunn e Abonnement.