Once a patient reaches remission, how do doctors decide between monitoring for relapse or starting maintenance therapy?

Dr. Chandhok - Improving Drug Efficacy for Underserved Populations

Once a patient reaches remission, how do doctors decide between monitoring for relapse or starting maintenance therapy?
What clinical trials are being done for maintenance therapy?
Which patients are the best candidates for maintenance therapy?
How does maintenance therapy benefit patients with acute myeloid leukemia? When is maintenance therapy used during the course of someone's AML treatment? How long does someone receive maintenance therapy for?