TY JOUR TI Prospects of phytopreparations based on Calendula officinalisin complex treatment of chemical burn of the esophagus KW chemical burns of the esophagus KW Calendula officinalis JO Acta biomedica scientifica AU Dorzhiev, .. AU Voskresenskaya , M.. AU Plekhanov, A.N. AU Tsyrempilov , S.. PY 2016 IS 1 PB Scientific Center for Family Problems and Human Reproduction