Shehu Umar Abdullahi, MBBS^1*, Binta W. Jibir, MBBS^2*, Halima Bello-Manga, MBBS, MPH, FMCPath³, Safiya Gambo, MBBS, FWACP^4*, Hauwa Inuwa, MBBS^5*, Aliyu Gaya Tijjani, MBBS^6*, Aisha Amal Galadanci, MBBS^7*, Awwal Musa Borodo, MBBS, FMCPath^8*, Najibah Aliyu Galadanci, MBBS, MPH⁹, Nura Idris, MBBS, FWACS^6*, Abulkadir M Tabari, MBBS, FMCR, FICS^10*, Lawal Haliru, MBBS^11*, Khadija Bulama, BNSc^12*, Gloria Bahago, RN^13*, Mohammed A. Sani, B. Pharm, MSc^14*, Aisha Suleiman, MBBS^13*, Murtala Umar, B. Pharm^14*, Charity Dooshima, Agba, B. Pharm^15*, Aisha Kazaure, B. Pharm^16*, Bilya Sani Musa, BSc, MPPA, MHE^12*, Fahad M Usman, BSc^12*, Abdulrasheed Sani, MIM^13*, Awwal Gambo, PGDM, MDS^6*, Jamila S. Ibrahim, MBBS, MScPH, PMCPead^17*, Mustapha Hikima, MBBS, FWACP^18*, Aisha B. Musa, MBBS^5*, Abdu H. Dambatta, MBBS, FWACP^19*, Jamil Aliyu Galadanci, BSc, MSc^20*, Brittany Covert Greene, MPH, CCRP^21*, Djamila Labib Ghafuri, MPH^22*, Mark Rodeghier, PhD^23*, James Slaughter, PhD^24*, Fenella Jane Kirkham, MD^25*, Kathleen Neville, MD, MS, FAAP, FCCP^26*, Adetola A. Kassim, MD, MS²⁷, Muktar Aliyu, MBBS, DrPH, MPH^28*, Lori C. Jordan, MD, PhD^29*, Edwin Trevathan, MD, MPH^30* and Michael R. DeBaun, MD, MPH³¹

¹Pediatrics, Bayero University/Aminu Kano Teaching hospital, Kano, Nigeria
²Hasiya Bayero Specialist Hospital, Kano, Nigeria
³Barau Dikko Teaching Hospital, Kaduna State University, Kaduna, NGA
⁴Murtala Mohammed Specialist Hospital, Kano, Nigeria
⁵Department of Pediatrics, Aminu Kano Teaching Hospital, Kano, Nigeria
⁶Department of Pediatrics, Murtala Mohammed Specialist Hospital, Kano, Nigeria
⁷Department of Hematology and Blood Transfusion, Aminu Kano Teaching Hospital Kano, Kano, NGA
⁸Department of Medicine, Murtala Mohammed Specialist Hospital, Kano, Nigeria
⁹School of Public Health/Epidemiology, University of Alabama at Birmingham, Birmingham, AL
¹⁰Department of Radiology, Barau Dikko Teaching Hospital, Kaduna, Nigeria
¹¹Department of Pediatrics, Barau Dikko Teaching Hospital/Kaduna State University, Kaduna, Nigeria
¹²Department of Administration, Aminu Kano Teaching Hospital, Kano, Nigeria
¹³Department of Pediatrics, Barau Dikko Teaching Hospital, Kaduna, Nigeria
¹⁴Department of Pharmacy, Aminu Kano Teaching Hospital, Kano, Nigeria
¹⁵Department of Pharmacy, Murtala Mohammed Specialist Hospital, Kano, Nigeria
¹⁶Department of Pharmacy, Barau Dikko Teaching Hospital, Kaduna, Nigeria
¹⁷Department of Pediatrics, Mohammed Abdullahi Wase Specialist Hospital, Kano, Nigeria
¹⁸Department of Radiology, Mohammed Abdullahi Wase Specialist Hospital, Kano, Nigeria
¹⁹Department of Radiology, Aminu Kano Teaching Hospital, Kano, Nigeria
²⁰Department of Computer Science, Bayero University, Kano, Nigeria
²¹Department of Pediatrics, Vanderbilt-Meharry Center of Excellence in Sickle Cell Disease, Vanderbilt University Medical Center, Nashville, TN
²²Department of Pediatrics, Vanderbilt-Meharry Center of Excellence in Sickle Cell Disease, Vanderbilt University Medical Center, Nashville
²³Statistical Consultant, Rodeghier Consultants, Chicago, IL
²⁴Department of Biostatistics, Vanderbilt University Medical Center, Nashville
²⁵Department of Pediatrics, UCL Great Ormond Street Institute of Child Health, London, United Kingdom
²⁶PEDIATRICS, University of Arkansas for Medical Sciences/Arkansas Children’s Hospital, LITTLE ROCK, AR
²⁷Department of Medicine, Division of Hematology and Oncology, Vanderbilt University Medical Center, Nashville, TN
²⁸VANDERBILT INSTITUTE FOR GLOBAL HEALTH, VANderbilt University School of Medicine, NASHVILLE, TN
²⁹Department of Pediatrics, Pediatric Neurology, Vanderbilt University School of Medicine, Nashville, TN
³⁰PEDIATRICS, Vanderbilt Institute for Global Health, VANDERBILT UNIVERSITY MEDICAL CENTER, NASHVILLE, TN
³¹Vanderbilt-Meharry Center for Excellence in Sickle Cell Disease, Vanderbilt University School of Medicine, Nashville, TN

Shehu Umar Abdullahi, MBBS^1*, Surayya M. Sunusi^2*, Mohammed Sani Abba^3*, Saifuddeen Sani^4*, Aisha Galadanci, MBBS^5*, Hauwa Inuwa, MBBS^6*, Binta W. Jibir, MBBS^7*, Brittany Covert Greene, MPH, CCRP^8*, Adetola A. Kassim, MD, MS⁹, Lori C. Jordan, MD, PhD^10*, Muktar Aliyu, MBBS, DrPH, MPH^11*, Mark Rodeghier, PhD^12*, Awwal Musa Borodo, MBBS, FMCPath^13*, Bilya Sani Musa, BSc, MPPA, MHE^4*, Habu Abdu^5* and Michael R. DeBaun, MD, MPH¹⁴

¹Pediatrics, Bayero University/Aminu Kano Teaching hospital, Kano, Kano, Nigeria
²Department of Community Medicine, Aminu Kano Teaching Hospital, Kano, Nigeria
³Department of Pharmacy, Aminu Kano Teaching Hospital, Kano, Nigeria
⁴Department of Administration, Aminu Kano Teaching Hospital, Kano, Nigeria
⁵Department of Hematology and Blood Transfusion, Aminu Kano Teaching Hospital, Kano, Nigeria
⁶Department of Pediatrics, Aminu Kano Teaching Hospital, Kano, Nigeria
⁷pediatrics, Murtala Mohammed specialist hospital, Kano, Nigeria
⁸Vanderbilt-Meharry Center of Excellence in Sickle Cell Disease, Nashville, TN
⁹Department of Medicine, Division of Hematology and Oncology, Vanderbilt University Medical Center, Nashville, TN
¹⁰Department of Pediatrics, Pediatric Neurology, Vanderbilt University School of Medicine, Nashville, TN
¹¹VANDERBILT INSTITUTE FOR GLOBAL HEALTH, VANderbilt University School of Medicine, NASHVILLE, TN
¹²Statistical Consultant, Rodeghier Consultants, Chicago, IL
¹³Department of Medicine, Murtala Mohammed Specialist Hospital, Kano, Nigeria
¹⁴Vanderbilt-Meharry Center for Excellence in Sickle Cell Disease, Vanderbilt University School of Medicine, Nashville, TN

Lydia H. Pecker, MD¹, Sarah Hussain^2*, Jaanvi Mahesh^2*, Ravi Varadhan, PhD^3*, Mindy S Christianson, MD, MBA^4* and Sophie M. Lanzkron, MD, MHS⁵

¹Division of Hematology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
²Johns Hopkins University, Baltimore
³Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, MD
⁴Division of Reproductive Endocrinology and Infertility, Department of Gynecology and Obstetrics, Johns Hopkins Univeristy School of Medicine, Baltimore, MD
⁵Department of Medicine, Division of Hematology, Johns Hopkins Medicine, Baltimore, MD

Lana Mucalo, MD^1*, Amanda M. Brandow, DO, MS¹, Sadie F. Mason, MD^1*, Ashima Singh, PhD, MS¹, Bradley W. Taylor, FAMIA^1*, Katherine J. Woods, MS^1*, Fouza I. Yusuf, MS, MPH^1* and Julie Panepinto, MD, MS²

¹Medical College of Wisconsin, Milwaukee, WI
²The Medical College of WI, Milwaukee, WI

Fuad A El Rassi, MD¹, John James, MSc^2*, Biree Andemariam, MD³, Baba PD Inusa, MD, MBBS⁴, Beverley Francis-Gibson, MA^5*, Alecia C Nero, MD^6*, Caterina P. Minniti, MD⁷, Cassandra Trimnell, BA^8*, Miguel R Abboud, MD⁹, Jean-Benoît Arlet, MD^10*, Raffaella Colombatti, MD, PhD¹¹, Mariane de Montalembert, MD, PhD^12*, Suman Jain, MD^13*, Wasil Jastaniah, MD^14*, Erfan Nur, MD, PhD¹⁵, Marimilia Pita, MD^16*, Nicholas Ramscar, MBBS^17*, Tom Bailey, MSci^18*, Olivera Rajkovic-Hooley, PhD^18* and Ifeyinwa Osunkwo, MD, MPH^19*

¹Emory University School of Medicine and Georgia Comprehensive Sickle Cell Center at Grady Health System, Atlanta, GA
²Sickle Cell Society, London, United Kingdom
³New England Sickle Cell Institute at the University of Connecticut, Farmington, CT
⁴Evelina Children's Hospital and Guy’s and St Thomas’ Hospital, London, United Kingdom
⁵Sickle Cell Disease Association of America, Baltimore, MD
⁶University of Texas Southwestern Medical Center, Dallas, TX
⁷Albert Einstein College of Medicine, New York, NY
⁸Sickle Cell 101, San Jose, CA
⁹American University of Beirut Medical Center, Beirut, Lebanon
¹⁰Hôpital Européen Georges-Pompidou, Paris, France
¹¹Azienda Ospedale-Università di Padova, Padova, Italy
¹²Hôpital Universitaire Necker-Enfants Malades, Paris, France
¹³Thalassemia and Sickle Cell Society, Hyderabad, India
¹⁴Umm Al-Qura University, Mecca, Saudi Arabia
¹⁵Academic Medical Center, Amsterdam, Netherlands
¹⁶Laureate University-UAM, Pediatric-Hematology, Hospital Samaritano, São Paulo, Brazil
¹⁷Novartis Pharma AG, Basel, Switzerland
¹⁸Adelphi Real World, Bollington, United Kingdom
¹⁹Sickle Cell Disease Enterprise at the Levine Cancer Institute/Atrium Health, Charlotte, NC