especially like to thank Sofia Nyström, Louise Malmström and Song-Ee Ahn for all your very valued help and support. And, of course, my greatest appreciation to my dear "academic sisters" from the same PhD student cohort: Helena Colliander, Lina Rahm and Daphne Arbouz, and also Eleonor Bredlöv Eknor from the cohort before us. Thank you, not only for your intelligent feedback and readings, but also for all our deep conversations, silly joking and loving friendships. Without your company, I would never had made it through. I am very grateful to other friends and colleagues within academia for all the work you have put into reading, commenting and encouraging the work on this thesis. Thank you Annika Pastuhov,