 ዘርፉ ልምድና በቂ ስልጠና በሌላቸው ካድሬዎች በመያዙ በመረጃ አሰጣጥ በኩል ያለው ችግር እንዲባባስ ምክንያት ሆኗል።
Insufficient formation and the inability to maintain lifted lesions seemed to increase the difficulties associated with procedures.