Participants consented to participate in the study, which was approved by the Washington University Institutional Review Board.
All participants provided informed consent to participate in the study, which was approved by the Northwestern University Institutional Review Board.
All participants gave written consent to participate in the study, which was carried out in accordance with the Helsinki Declaration.
MTB participants consented by vote to participate in the study, which was acknowledged in the meeting minutes.
All participants gave written consent to participate in the study, which was approved by our Ethical Committee.
All participants provided informed consent to participate in the study, which was conducted in accordance with Australian ethics and privacy laws.
Snowball samples may be more biased toward the more cooperative unemployed participants who are willing to participate in the study which limits the generalization of our results.
All participants gave their written consent to participate in the study, which was approved by the local ethics committee.
All participants gave informed, written consent to participate in the study, which was approved by the local Research Ethics Committee.
All participants gave informed written consent to participate in the study, which was carried out in accordance with the Helsinki Declaration.
All participants received explanation of study procedures and gave their written consent to participate in the study, which was conducted according to the provisions of the Helsinki declaration.
