ORIGINAL ARTICLE
The effects of daily dose and treatment duration of metformin on the prevalence of vitamin B12 deficiency and peripheral neuropathy in Chinese patients with type 2 diabetes mellitus: A multicenter cross‐sectional study
二甲双胍日剂量和治疗时间对中国2型糖尿病患者维生素B12缺乏和周围神经病变患病率的影响:一项多中心横断面研究