They must be at least double the standard weight for their age and height; all normal weight reduction treatment must have failed; they must be normal mentally and in glandular secretions, and must not be alcoholics. When it was found that Liu fitted all these conditions perfectly, doctors decided to do the operation for free, on the grounds that it was medical research.
出院後，每一至二個月要回院看門診，由醫生繼續觀察和檢驗，以免體重掉得太快，影響身體健康。通常在手術後二年左右體重即可穩定下來，一切生活也隨之恢復正常。