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. 2017 Apr 12;75(1):S27–S35. doi: 10.1097/QAI.0000000000001325

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Copyright © 2017 The Author(s). Published by Wolters Kluwer Health, Inc.

This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal.

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FIGURE 1. — As WHO guidelines have evolved over time, key indicators included in the PMTCT cascade have changed, as shown by X, with bolded X representing the introduction of new indicators.^3–11 ART, antiretroviral therapy; ARV, antiretroviral.