Pathological evidence of pulmonary thrombotic phenomena in severe COVID‐19 - Dolhnikoff, Marisa; Duarte‐Neto, Amaro Nunes; Almeida Monteiro, Renata Aparecida; Silva, Luiz Fernando Ferraz; Oliveira, Ellen Pierre; Saldiva, Paulo Hilário Nascimento; Mauad, Thais; Negri, Elnara Marcia (Journal of thrombosis and haemostasis, 2020)