For citations:

Shapkin Yu.G., Starchihina D.V., Matveeva E.N. DIFFICULTIES AND POSSIBILITY OF PREOPERATIVE DIAGNOSIS OF TUMOR OF JEONUM COMPLICATED BY RECURRENT BLEEDING WITH SEVERE BLOOD LOSS. Bulletin of Pirogov National Medical & Surgical Center. 2024;19(1):167-169. (In Russ.) https://doi.org/10.25881/20728255_2024_19_1_167