1. Department of Pharmaceutics and Analytical Chemistry, The Danish University of Pharmaceutical Sciences, Universitetsparken 2, 2100 Copenhagen, Denmark, Diabetes Protein Engineering, Novo Nordisk A/S, Novo Allé 1, 2880 Bagsværd, Denmark, and Institute of Molecular Biology and Physiology, University of Copenhagen, Universitetsparken 13, 2100 Copenhagen, Denmark