Decreased Plasma Level of Cytokeratin 20 (KRT20) Is Indicative of the Emergence and Severity of Acute GvHD Irrespective to the Type of Organ Involvement oleh Nikolett Lupsa, Ákos Szegedi, András Gézsi, Zoltán Vuncs, Tamás Masszi, Gábor Mikala, Péter Reményi, Sara Deola, Arun Prasath Lakshmanan, Annalisa Terranegra, Edit I. Buzás, Zoltán Pós