I think the "subject to" is what's often called a 'weasel clause'. It is possible to essentially put just about anything you need there...a great deal of folks will involve anything like "issue to favorable funding" or "matter to business enterprise husband or wife's approval" to present on their own http://molbiol.ru/forums/index.php?showtopic=928457&st=950&p=6086991#entry6086991