在文题Endoscopic management of foreign bodies in the upper gastrointestinal tract:a retrospective study of 1294 cases中,副文题的作用是突出病例数。
在文题Endoscopic management of foreign bodies in the upper gastrointestinal tract:a retrospective study of 1294 cases中,副文题的作用是突出病例数。
A.正确
B.错误
正确答案:正确