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Stubbs, R James ORCID: https://orcid.org/0000-0002-0843-9064, Duarte, Cristiana ORCID: https://orcid.org/0000-0002-6566-273X, Dakin, Clarissa ORCID: https://orcid.org/0000-0002-6346-3606, Palmeira, António L ORCID: https://orcid.org/0000-0001-6508-0599, Sniehotta, Falko F ORCID: https://orcid.org/0000-0003-1738-4269, Horgan, Graham W ORCID: https://orcid.org/0000-0002-6048-1374, Larsen, Sofus C ORCID: https://orcid.org/0000-0002-0838-9378, Marques, Marta M ORCID: https://orcid.org/0000-0002-4797-9557, Encantado, Jorge ORCID: https://orcid.org/0000-0003-0542-8340, Evans, Elizabeth H ORCID: https://orcid.org/0000-0002-3432-3778, Turicchi, Jake ORCID: https://orcid.org/0000-0003-1174-813X, O'Driscoll, Ruari ORCID: https://orcid.org/0000-0003-3995-0073, Scott, Sarah E ORCID: https://orcid.org/0000-0002-8168-7064, Pearson, Beth ORCID: https://orcid.org/0000-0002-7151-2965, Ramsey, Lauren ORCID: https://orcid.org/0000-0001-6518-9965, Mikkelsen, Marie-Louise ORCID: https://orcid.org/0000-0003-4921-6593, Santos, Inês ORCID: https://orcid.org/0000-0002-1638-8551, Matos, Marcela ORCID: https://orcid.org/0000-0001-7320-7107, Teixeira, Pedro J ORCID: https://orcid.org/0000-0001-7202-0527 and Heitmann, Berit L ORCID: https://orcid.org/0000-0002-6809-4504 (2026) A Digital Toolkit for Weight Loss Maintenance in European Adults (NoHoW): 2×2 Factorial Randomized Controlled Trial. Journal of medical Internet research, 28. e69634.