The evidence gap between alcohol consumption and oesophageal squamous cell carcinoma in east Africa – Authors' reply. Issue 5 (May 2022) - McCormack, Valerie; Middleton, Daniel R S; Mmbaga, Blandina T; Menya, Diana; Dzamalala, Charles; Nyakunga-Maro, Gissela; Finch, Peter; Mlombe, Yohannie; Schüz, Joachim