Description of a new clinical syndrome: thoracic constriction without evidence of the typical funnel-shaped depression—the "invisible" pectus excavatum. - Hohneck, Anna; Ansari, Uzair; Natale, Michèle; Wittig, Karsten; Overhoff, Daniel; Riffel, Philipp; Boettcher, Michael; Akin, Ibrahim; Duerschmied, Daniel; Papavassiliu, Theano (Scientific Reports, 2023)