Study to Evaluate the Effect of GBT440 on TCD in Pediatrics With Sickle Cell Disease

Gertrude's Children Hospital, Nairobi

King Abdullah International Medical Research Center (KAIMR) Ministry of National Guard - Health, Riyadh

Abu El Rich Hospital, Cairo University Hospital, Cairo

Ain Shams University Hospital-Clinical Research Center (MASRI), Cairo

The Children's Hospital of Philadelphia, Philadelphia

Children's National Medical Center, Washington D.C.

Alexandria Clinical Research Center, Faculty of Medicine, Alexandria University, Alexandria

Medical University of South Carolina, Charleston

Children's Healthcare of Atlanta: Hughes Spalding, Atlanta

University of Miami, Miami

Azienda Ospedaliera Universita (AOU) Padova, Padua

University of Mississippi Medical Center, Jackson

Kemri/Crdr,Siaya,Kemri Clinical Research Annex, Kisumu

Azienda Ospedaliera Universitaria (AOU) Meyer, Florence

Texas Children's Hospital- Wallace Tower, Houston

"Azienda Ospedaliera Universitaria (A.O.U.) Luigi Vanvitelli", Napoli

Lagos University Teaching Hospital, Lagos

College of Medicine, University of Ibadan, Ibadan

University of Nigeria Teaching Hospital, Enugu

Aminu Kano Teaching Hospital, Kano

Barau Dikko Teaching/ Kaduna State University, Kaduna

Boston Children's Hospital, Boston

Zagazig University Hospital, Alexandria

Sultan Qaboos University Hospital, Muscat

Department of Child Health, University of Ghana Medical School, College of Health Sciences, Accra

Komfo Anokye Teaching Hospital, Kumasi

KEMRI CRDR Clinical Research Annex, Nairobi

Strathmore University Medical Centre, Nairobi

Barts Health NHS Trust, London