1472
1192
1132
1833
1333
1389
1234
1112
1274
1372
1204
1116
1384
1088
1141
1138
1685
1235
1737
1727
1069
1330
1222
1352
1676
1883
1754
1620
1137
1764
1111
1892
1233
1612
1195
1040
1455
1568
1814
1174
1644
1369
1056
1536
1697
1472
1203
1603
1491
1408
1554
1950
1820
1687
1437
1123
1919
1479
1481
1168
1316
1986
1004
1957
1804
1181
1814
1367
1649
1266
1916
1167
1882
1809
1663
1541
1617
1499
1115
1116
1821
1277
1430
1267
1700
1165
1923
1448
1981
1168
1233
1623
1236
1471
1578
1271
1886
1033
1194
http://library.phcsuphan.ac.th/search.usisassist.php?fromrefcode=&keyword=%20Periodontal%20Diseases%20Surgeryมีปัญหาในการเชื่อมต่อ/Connection Problems (open url)