Demonstrations of the effectiveness by systematic clinical study are limited to 4 months duration for anxiety disorder.

There are about 1500 eligible banks which may bid for short term repo contracts of two weeks to three months duration.

Tours were usually of six months duration, but many spent their entire working lives as migrant workers.

The patrols were missions of three months duration but the ship was also on call when at base.

While originally conceived for a six months duration, the theatrical window has today been reduced to little more than four months.

It consists of 9 semesters each of 6 months duration.

Bennett proposed that there should be five experimental courses each of ten months duration.

A delusional disorder of at least 6 months duration characterized by the following:

A master planning, improvement and development project of 18 months duration was approved in on July 25, 2005.

There were two rotations during the deployment, each of six months duration.