Healthy marriage : what is it and why should we promote it? : hearing before the Subcommittee on Children and Families of the Committee on Health, Education, Labor, and Pensions, United States Senate, One Hundred Eighth Congress, second session, on examining how to promote a healthy marriage, focusing on the Healthy Marriage Initiative, the Temporary Housing to Needy Families Program, and discouraging teen pregnancy, April 28, 2004.