[1] Univ Leeds, Leeds Inst Canc & Pathol, Leeds Inst Rheumat & Musculoskeletal Med, Sch Med, Leeds LS9 7TF, W Yorkshire, England
[2] Mansoura Univ, Dept Clin Pathol, Fac Med, Mansoura, Egypt
[3] Univ Leeds, Leeds Inst Canc & Pathol, Sch Med, Leeds LS9 7TF, W Yorkshire, England