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. 2021 Nov 12;8:774328. doi: 10.3389/fnut.2021.774328

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Copyright © 2021 Nguyen, Nguyen, Pham, Le, Nguyen, Luong, Do, Dao, Nguyen, Ha, Pham, Nguyen, Nguyen, Do, Nguyen, Trinh, Le, Tra, Nguyen, Nguyen, Phan, Pham, Bai and Duong.

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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Simple slope plot for interaction between lockdown and digital healthy diet literacy on mental health changes among outpatients (n = 4,348). DDL, digital healthy diet literacy; SD, standard deviation.