Departments: Response to LetterIn ReplySaade, George R. MD; Boniface, J. Jay PhD; Burchard, Julja MSAuthor Information Department of Obstetrics and Gynecology, University of Texas Medical Branch at Galveston, Galveston, Texas Sera Prognostics, Inc., Salt Lake City, Utah Financial Disclosure J. Jay Boniface and Julja Burchard are employees of Sera Prognostics, a company that has developed a screening test for preterm birth prediction and continues to develop such tests. The other author did not report any potential conflicts of interest. Obstetrics & Gynecology: April 2020 - Volume 135 - Issue 4 - p 972 doi: 10.1097/AOG.0000000000003784 Buy Corresponding Article Metrics Corresponding Article Effects of Selective Exclusion of Patients on Preterm Birth Test Performance Jelliffe-Pawlowski, Laura L.; Rand, Larry; Ryckman, Kelli K. Obstetrics & Gynecology. 135(4):971-972, April 2020. © 2020 by the American College of Obstetricians and Gynecologists. Published by Wolters Kluwer Health, Inc. All rights reserved.