Affiliations

• ¹ Internal Medicine, University of Uyo Teaching Hospital, Uyo, Nigeria.
• ² Department of Medicine, University of Cape Town, Cape Town, South Africa.
• ³ Department of Medicine and Therapeutics, University of Ghana Medical School, Korle bu Teaching Hospital, Accra, Ghana.
• ⁴ Paediatrics and Child Health, Aga Khan University Faculty of Health Sciences East Africa, Nairobi, Kenya.
• ⁵ Medicine, Lagos State University Teaching Hospital, Ikeja, Nigeria.
• ⁶ Rheumatology, El Ayachi Hospital, Medical university, Rabat, Morocco.
• ⁷ Rheumatology and Rehabilitation, Ain Shams University, Cairo, Egypt.
• ⁸ Department of Paediatrics, Faculty of Medicine, Batna 2 University, Batna, Algeria.
• ⁹ Kassab institute of orthopedics, Faculty of Medicine, Tunis El Manar University, Tunis, Tunisia.
• ¹⁰ Department of clinical medicine and therapeutics, University of Nairobi College of Health Sciences, Nairobi, Kenya.
• ¹¹ Rheumatology, Atlas Clinic of Rheumatology, Batna, Algeria.
• ¹² Medicine, University of Maiduguri Teaching Hospital, Maiduguri, Nigeria.
• ¹³ Department of Paediatrics, Ahmed Gasim Children's Hospital, Khartoum, Sudan.
• ¹⁴ Faculty of Medicine, Dentistry and Health, University of Sheffield, Sheffield, UK.
• ¹⁵ Division of Rheumatology, Department of Medicine, University of Witwatersrand, Johannesburg, South Africa.
• ¹⁶ Rheumatology, Military Hospital, Agadir, Morocco.
• ¹⁷ Mongi Slim Hospital - faculty of Medicine, University of Tunis El Manar, Tunis, Tunisia.
• ¹⁸ Rheumatology and Rehabilitation, Fayoum University, Fayoum, Egypt.
• ¹⁹ Pediatrics Department, Mansoura University, Mansoura, Egypt.
• ²⁰ Rheumatology and Rehabilitation, Tanta University, Tanta, Egypt.
• ²¹ Rheumatology and Rehabilitation, Elminia University, El Minia, Egypt.