1. 17 1/8
23 1/8
25 1/8
30 1/8
48 1/8

2. •

3. •
•
•
•

4. •

5. •
-

6. 1.http://www.clinicdek.com/index.php?option=
com_content&task=view&id=107&Itemid=32
2.http://www.si.mahidol.ac.th/sidoctor/e-
pl/articledetail.asp?id=850