Inconsistent Adherence to a Journal’s Instructions for Authors: Case of Number of Authors in Letters to the Editor. Principles and Practice of Clinical Research, [S. l.], v. 10, n. 2, 2024. DOI: 10.21801/ppcrj.2024.102.8. Disponível em: https://journal.ppcr.org/index.php/ppcrjournal/article/view/329.. Acesso em: 9 oct. 2024.