[1] Center for Population Research,
[2] National Institute of Child Health and Human Development,undefined
[3] Bethesda,undefined
[4] MD,undefined
[5] Bristol Urological Institute,undefined
[6] Southmead Hospital,undefined
[7] Bristol,undefined
[8] UK,undefined
[9] Rush Medical College,undefined
[10] Chicago,undefined
[11] IL,undefined
[12] Johns Hopkins University,undefined
[13] Baltimore,undefined
[14] MD,undefined
[15] Madigan Army Medical Center,undefined
[16] Tacoma,undefined
[17] WA,undefined
[18] Uniformed Services University of the Health Sciences,undefined
[19] Bethesda,undefined
[20] MD,undefined
[21] Wright Patterson Air Force Base 74th Medical Group,undefined
[22] OH,undefined
[23] Cleveland Clinic Foundation,undefined
[24] Cleveland,undefined
[25] OH,undefined
[26] University of Iowa,undefined
[27] Iowa City,undefined
[28] IA,undefined
[29] Duke University,undefined
[30] Durham,undefined
[31] NC,undefined
[32] USA,undefined