LONDON, England, Jan. 6 -- BMJ Open, a medical journal that says it features research questions in clinical medicine, public health and epidemiology, published research articles, including the following topics, in its January 2021 edition:

* Assessing seropositivity for IgG antibodies against SARS-CoV-2 in Ahmedabad city of India: a cross-sectional study

* Association between obesity and urinary albumin-creatinine ratio in the middle-aged and elderly population of South . . .

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