Zielen, S., Wollscheid, N., Nickolay, T., Grimmel, C., Scheele, D., Sattler, F., Prenzel, F., Lorenz, M., Schaub, B., Lex, C., Stieglitz, F., Trischler, J., Donath, H., Lau, S., Hamelmann, E., Vogelberg, C., Gerstlauer, M., Grychtol, R., Schubert, R., Gappa, M., Schollenberger, L. & Wosniok, J. (2026). Efficacy and safety of tiotropium in partial and uncontrolled preschool asthma (TIPP): a phase III, multicentre, randomised, double-blind, placebo-controlled trial. eClinicalMedicine, 99: 104172. Elsevier. doi:10.1016/j.eclinm.2026.104172.