Global burden of amphetamine, cannabis, cocaine and opioid use in 204 countries, 1990–2023: a Global Burden of Disease Study

• University of Khartoum (SD)
• African Institute for Mathematical Sciences (RW)

• Jimma University (ET)

as printed: Mohammed Ahmed Al-Kaif

as printed: Muaaz M. Alajlani

as printed: Rasmieh Mustafa Al-Amer

as printed: Wafa A. Aldhaleei

• Suez Canal University (EG)

as printed: Abdelazeem M. Algammal

• University of Maiduguri (NG)

• University of Maiduguri (NG)

as printed: Samah W. Al-Jabi

as printed: Alaa B. Al-Tammemi

as printed: Karem H. Alzoubi

as printed: Walid A. Al-Zyoud

• Jos University Teaching Hospital (NG)
• University of Jos (NG)

• University of Medical Sciences, Ondo (NG)
• Olusegun Agagu University of Science and Technology (NG)

• University of Medical Sciences, Ondo (NG)
• Olusegun Agagu University of Science and Technology (NG)

• Wollega University (ET)
• Jimma University (ET)

• October 6 University (EG)

• University of the Gambia (GM)