Koenighofer, Martin, Thomas Lion, Angelika Bodenteich, Eva Prieschl-Grassauer, Andreas Grassauer, Hermann Unger, Christian A. Mueller, and Tamás Fazekas. 2014. “Carrageenan Nasal Spray in Virus Confirmed Common Cold: Individual Patient Data Analysis of Two Randomized Controlled Trials”. Multidisciplinary Respiratory Medicine 9 (1). https://doi.org/10.4081/mrm.2014.392.