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Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
Statistics of studies regarding the effects of coffee on hip fracture risk [14,17,20,21,23,25,26] (■: hazard ratio of each included studies; ◆: the pooled hazard ratio of included studies).