*2.7. Ethics Statement*

The overarching "Feeding America's Bravest" protocol was approved by the Harvard Institutional Review Board (IRB16-0170) ethics committee and is registered at Clinical Trials (NCT02941757). All participants provided signed informed consent for participation. The participants who met the criteria for enrollment in the intervention were all informed about their right to decline participation to the intervention or to withdraw at any time as per the Declaration of Helsinki, and the participants who decided to enroll gave full informed consent as per the protocol of the research [40].
