Common Cold Centre and Healthcare Clinical Trials;
Cardiff School of Biosciences;
Cardiff University;
Cardiff;
UK;
Campus Charité Mitte—Schlafmedizinisches Zentrum;
Berlin;
Germany;
Burg Apotheke;
Konigstein/Taunus;
Germany;
Combination Products; Multi-Symptom Relief; Multi-Ingredient; Common Cold; Flu;