Perrey, S. (2017). Do we perform better when we increase red blood cells? The Lancet Haematology, 17, 2352-3026. https://doi.org/10.1016/S2352-3026(17)30123-0. Retrieved August 23, 2018.What information is NOT needed in this entry?

A.The doi number

B.The date of retrieval

C.The page range

正确答案：C