Efficacy and safety of insulin glargine/lixisenatide fixed‐ratio combination (iGlarLixi 1:1) in Japanese patients with type 2 diabetes mellitus inadequately controlled on oral antidiabetic drugs: A randomized, 26‐week, open‐label, multicentre study: The LixiLan JP‐O2 randomized clinical trial. (16th September 2020)