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. 2020 Mar 13;11:110. doi: 10.3389/fendo.2020.00110

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Copyright © 2020 Tao, Liu and Bai.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Forest plots for the meta-analysis of the effect of testosterone supplementation on functional capacity, cardiac functional classification, and quality of life in CHF patients. (A) functional capacity of maximal oxygen consumption (VO_2max) in cardiopulmonary exercise test; (B) New York Heart Association (NYHA) functional classification; and (C) the quality of life as indicated by the result of Minnesota Living with Heart Failure (MLHF) questionnaire.