Meet Our Team

William Schleif, MS., grew up in Clearwater, FL and received his Bachelor of Science in Biology from Florida State University. He received his graduate education in Biology at the University of South Florida, and began his career at All Children’s Hospital in 2008 as a translational research scientist. He also served in a supporting role in the ACH Pathology and Laboratory Medicine Department before moving back into research to help build the state-of-the-art, hospital-integrated biorepository in 2013. In his position, he manages biorepository operations and helps with the implementation of a diverse portfolio of clinical and investigator initiated studies into the hospital setting, designed around industry best practices and College of American Pathologists Biorepository standards for biospecimen processing, storage and distribution. He has a focused interest in biorepository science and applied genetics research in medicine, and has a medical technologist license in Molecular Pathology in the state of Florida. William is an active member of the International Society for Biological and Environmental Repositories (ISBER), and has presented or published original work in several medical fields.

Robert Follett joined the Johns Hopkins All Children’s Biorepository team in April 2018 after a long connection to the hospital. He joined the staff for the first time in 1995 as an intern in the Immunoparameters Laboratory run by Dr. N.K. Day. He worked closely with Dr. Robert A. Good, a pioneer in bone marrow transplants, in various RNA and DNA manipulations, including ribonuclease protection assays, RT-PCR, PCR and sequencing. After becoming a full staff member in 1996, he worked in the Immunoparameters lab until August 1999. After outside stints as a medical technologist, in retail sales and at the nearby Children’s Research Institute, he returned Johns Hopkins All Children’s in 2015 and worked in the immunology section of the clinical lab specializing in flow cytometry and molecular procedures before joining the Biorepository. Follett earned a bachelor's of science in molecular biology from Clarion University of Pennsylvania and a bachelor of arts in Studio Arts from the University of Pittsburgh.

Bryan Lopes joined Johns Hopkins All Children's Hospital in 2014. During his time, he has contributed to process standardization and improvement to help develop the pediatric biorepository into a College of American Pathologists accredited core. Bryan also shares his particular expertise in all complexities of sample processing and quality control to help ensure biospecimens will meet future research needs. Bryan has a Bachelors of Science in Biology and is currently working on his Masters of Applied Clinical and Preclinical Research (MACPR) from The Ohio State University, an interdisciplinary program that provides an advanced graduate immersion into design of study protocols, advancement of scientific knowledge and the regulations applying to clinical research. Bryan has significant biorepository experience working as a research associate at the Biopathology Center at Nationwide Children’s Hospital in Columbus, Ohio, where he supported numerous oncology studies through the Children’s Oncology Group, Southwest Oncology Group and the Gynecologic Oncology Group. He also worked as a research associate supporting neonatology research at The Ohio State University Wexner Medical Center.

Sylvia Powell joined The Johns Hopkins University School of Medicine in July 2011 as assistant vice dean of administration in the Office of the Vice Dean for All Children's Hospital. Drawing upon more than 35 years of administrative experience in academic medicine, she is helping to lead the academic transformation of Johns Hopkins All Children's Hospital. Based in St. Petersburg, Ms. Powell provides administrative oversight of the development and growth of clinical, translational and basic research programs at Johns Hopkins All Children's Hospital. She has guided the establishment of a new Clinical and Translational Research Organization and the Johns Hopkins All Children's Pediatric Biorepository. She is also responsible for academic affairs and played an integral role in the inception of the All Children's Hospital pediatric residency program along with fellowships in pediatric general surgery, surgery research and cancer research. In addition, Ms. Powell oversees faculty development and recruitment initiatives. During more than 30 years at the University of Miami School of Medicine, Ms. Powell held several administrative roles focused on academic affairs, research administration, professional services and contracting, including serving as vice chair of administration for the Department of Neurology. From 2008-2011, she was director of administration for the Children's Center for Cancer and Blood Diseases at Children's Hospital Los Angeles, part of the Keck School of Medicine at the University of Southern California. In this role she was responsible for all research, philanthropic, professional practice and service line operations of the Children's Center, overseeing a $119 million budget. Ms. Powell holds an M.B.A. from the University of Miami.

Dr. Moon serves as an ethics member of the Johns Hopkins Medicine Institutional Review Board (IRB) and the Johns Hopkins All Children’s Hospital IRB and is a member of the Johns Hopkins Hospital Ethics Committee. Dr. Moon is an associate professor of general pediatrics and adolescent medicine at the Johns Hopkins University School of Medicine. She completed a fellowship in clinical medical ethics at the McLean Center for Clinical Medical Ethics of the University of Chicago and was a Robert Wood Johnson Clinical Scholar at the University of Chicago. She is a graduate of the Johns Hopkins University (JHU) School of Medicine and the JHU School of Public Health, and holds a bachelor of science degree from Michigan State University. Along with colleagues in the Program on Ethics in Clinical Practice, Dr. Moon is actively engaged in teaching clinical and research ethics to fellows, residents and students throughout The Johns Hopkins Hospital and the JHU School of Medicine. Dr. Moon is a member of the Center for Child and Community Health Research at Johns Hopkins Bayview Medical Center. Her research interests include empirical evaluation of ethics in everyday clinical practice, teaching and evaluating house staff education in ethics, and the ethics of community-based research. Dr. Moon is a core faculty member, where she is supported as the Freeman Family Scholar in Clinical Ethics.

Jennifer Cross is a biospecimen technician in the Johns Hopkins All Children’s Biorepository. She joined the hospital after nine years of working in a blood banking environment as a laboratory technician, including one of the first blood bank laboratories to implement pathogen reduction processes for platelet collections. Jennifer earned a bachelor's of science in chemistry with a concentration in criminalistics from Metropolitan University of Denver.