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"H" is not for hydroxychloroquine-"H" is for heparin: lack of efficacy of hydroxychloroquine and the role of heparin in COVID-19-preliminary data of a prospective and interventional study from Brazil.
de Oliveira Costa R, Nascimento JS, Reichert CO, da Costa APA, Dos Santos MAP, Soares AM, Tomé CEM, Hayden RL, Dos Santos CW, Barreiro B, El-Khatib AAB, de Pádua Covas Lage LA, Pereira J, Benetti MM. de Oliveira Costa R, et al. Among authors: el khatib aab. BMC Infect Dis. 2022 Feb 4;22(1):120. doi: 10.1186/s12879-022-07110-1. BMC Infect Dis. 2022. PMID: 35120461 Free PMC article.