ProQuest (Firm) 164 Library of Congress. Congressional Research Service 110 NetLibrary, Inc 54 SpringerLink (Online service) 44 England, Gary C. W. 14 National Center for Health Statistics (U.S.) 13 Texas. Department of Health 13 Centers for Disease Control and Prevention (U.S.) 12 Wiley InterScience (Online service) 12 McGraw-Hill Companies 11 Elsevier Science (Firm) 10 National Institutes of Health (U.S.) 10 Benesch, Franz, 1892- 9 Lindsay, Jeanne Warren 9 ScienceDirect (Online service) 9 United States. Agency for Healthcare Research and Quality 9 United States. Agency for International Development 9 Fleming, George, 1833-1901 8 Noakes, David E. 8 Ovid Technologies, Inc 8 United States. Department of Health and Human Services 8 Wright, John G. (John George) 8 Hobbins, John C., 1936- 7 Kanopy (Firm) 7 United States. Children's Bureau 7 United States. Congress. House. Select Committee on Children, Youth, and Families 7 Abma, Joyce C. 6 Bazer, Fuller W. 6 Briggs, Gerald G. 6 Caughey, Aaron B. 6 Gale (Firm) 6 Hamilton, Brady E. 6 Lockwood, Charles J. 6 Parkinson, Timothy J. 6 Queenan, John T. 6 Spencer, Thomas E. 6 Spong, Catherine Y. 6 Texas. Department of Human Services 6 United States. Congress. House. Committee on Energy and Commerce 6 United States. Department of the Air Force 6 United States. Public Health Service 6 Williams, W. L. (Walter Long), 1856-1945 6 Arthur, Geoffrey H. 5 Atwood, Margaret, 1939- 5 Books@Ovid (Online service) 5 Callahan, Tamara L. 5 Davidson, Michele R. 5 EBSCOhost 5 Ellis, Havelock, 1859-1939 5 Fernandes-Alcantara, Adrienne L. 5 more ...