PLUS-IS-LESS project: Procalcitonin and Lung UltraSonography-based antibiotherapy in patients with Lower rESpiratory tract infection in Swiss Emergency Departments: study protocol... oleh Cécile Bessat, Roland Bingisser, Markus Schwendinger, Tim Bulaty, Yvan Fournier, Vincent Della Santa, Magali Pfeil, Dominique Schwab, Jörg D. Leuppi, Nicolas Geigy, Stephan Steuer, Friedemann Roos, Michael Christ, Adriana Sirova, Tanguy Espejo, Henk Riedel, Alexandra Atzl, Fabian Napieralski, Joachim Marti, Giulio Cisco, Rose-Anna Foley, Melinée Schindler, Mary-Anne Hartley, Aurélie Fayet, Elena Garcia, Isabella Locatelli, Werner C. Albrich, Olivier Hugli, Noémie Boillat-Blanco, for the PLUS-IS-LESS study group