Guidance on diagnosis, prevention and treatment of thromboembolic complications in COVID-19: a position paper of the Brazilian Society of Thrombosis and Hemostasis and the Thrombosis and Hemostasis Committee of the Brazilian Association of Hematology, Hemotherapy and Cellular Therapy Fernanda Andrade Orsi; Erich V. De Paula; Fernanda de Oliveira Santos; Marcelo Melzer Teruchkin; Dirceu Hamilton Cordeiro Campêlo; Tayana Teixeira Mello; Maria Chiara Chindamo; Ariane Vieira Scarlatelli Macedo; Ana Thereza Rocha; Eduardo Ramacciotti; Ana Clara Kneese Nascimento; Joyce Annichino-Bizzacchi; Dayse Maria Lourenco; João Carlos de Campos Guerra; Suely Meireles Rezende; Cyrillo Cavalheiro Filho;

Magnetic resonance venography after cesarean-section delivery Gustavo H. Romani Magalhães; Daniel Dias Ribeiro; Suely Meireles Rezende;

HLA variants and inhibitor development in hemophilia A: results from the HEMFIL study group Márcio Antônio Portugal Santana; Daniel Gonçalves Chaves; Felipe CB Souza; Suely Meireles Rezende;