Writers Anna Sofia Urrila, Henna-Kaisa Wigren and Kirsi-Marja Zitting, are sleep-deprived mothers at the busiest time of their lives. They are also sleep researchers who met when they were working on their doctoral theses in the same research group at the University of Helsinki. Virpi Talvitie is an award-winning illustrator who, in addition to dozens of story books, has provided the illustrations for numerous textbooks and children’s nonfiction works.
