<qa>  What is the name of the drug that is used for depression within 1 week of study entry?- Use of antidepressants at therapeutic doses for depression within 1 week of study entry. Potential participants taking antidepressants other than escitalopram for depression may be enrolled following 1 week washout if they currently meet depression entry criteria and have been taking the medication for at least 4 weeks at a therapeutic dose non-responder 