Figure 2: Dynamic change of specific peaks in different periods of seven OMLDT patients. A, B, C and D belonged to group one; E and F belonged to group two. A and E were the results of m/z 4109 Da; B was m/z 4267 Da; C was m/z 5065 Da; D was m/z 9287 Da and F was m/z 9173 Da. 1, 2, 3, 4, 5, 6 and 7 were patients no.