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. 2018 Apr 4;9:141. doi: 10.3389/fendo.2018.00141

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Copyright © 2018 Baum, Rohrmeier, Syväri, Diefenbach, Franz, Dieckmeyer, Scharr, Hauner, Ruschke, Kirschke and Karampinos.

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 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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Mean and SD of proton density fat fraction (PDFF) values for males (blue/solid) and females (red/dashed) in L1–L4. Note the pronounced age-related fatty bone marrow conversion at lower lumbar vertebral levels.