Allergic sensitization to Mal d 1 without detectable specific serum IgE. - Litovkina, Alla; Byazrova, Maria; Smolnikov, Evgenii; Nikonova, Alexandra; Elisyutina, Olga; Fedenko, Elena; Ilina, Nataliya; Akinfenwa, Oluwatoyin; Campana, Raffaela; Kudlay, Dmitry; Valenta, Rudolf; Khaitov, Musa (Pediatric Allergy & Immunology, 2022)