A self-unfolding polymer foil loaded with a permeation enhancer Ionogel for superior oral peptide delivery. - Raptis K; McCabe R; Rubio-Huertas M; Rønholt S; Saaby L; Thamdrup LHE; Ghavami M; Kamguyan K; Nielsen HM; Boisen A (Drug delivery and translational research, 2026)