What is surprising is the method psychologists at the University of Texas have come up with to keep girls from developing eating disorders.

是不是 psychologists at the University of Texas have come up with 是修饰 method 的定语从句；to keep girls from developing eating disorders 是否为不定式短语做状语？

那如果截取当中一段 psychologists at the University of Texas have come up with to keep girls from developing eating disorders 

改为 Psychologists at the University of Texas have come up with keeping girls from developing eating disorders 是否是完整句子？有无语法错误？

Psychologists at the University of Texas have 为主语；

come up 为谓语；

with keeping girls from developing eating disorders 做 with 介词的宾语。

谢谢老师解答！