Variants of ATP1A3 in residue 756 cause a separate phenotype of relapsing encephalopathy with cerebellar ataxia (RECA)—Report of two cases and literature review oleh Mateusz Biela, Malgorzata Rydzanicz, Krystyna Szymanska, Karolina Pieniawska‐Smiech, Aleksandra Lewandowicz‐Uszynska, Joanna Chruszcz, Lucyna Benben, Malgorzata Kuzior‐Plawiak, Pawel Szyld, Aleksandra Jakubiak, Leszek Szenborn, Rafal Ploski, Robert Smigiel