Naomi J. Gadsby ⁎ 
Medical Microbiology, Department of Laboratory Medicine, Royal Infirmary of Edinburgh, Edinburgh EH16 4SA, UK
James J. Dunn, Coreen L. Johnson
Department of Pathology, Texas Children’s Hospital, Houston, TX 77030, USA
Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX 77030, USA
Taylor McQuillan, Martin P. McHugh, Kate E. Templeton
Medical Microbiology, Department of Laboratory Medicine, Royal Infirmary of Edinburgh, Edinburgh EH16 4SA, UK
Maria C. Rodriguez-Barradas, Daniel M. Musher
Department of Pathology & Immunology, Baylor College of Medicine, Houston, TX 77030, USA
Michael E. DeBakey Veterans Administration Medical Center, and Department of Medicine, Baylor College of Medicine, Houston, TX 77030, USA