Association of preoperative anemia and increased risk of blood transfusion and length of hospital stay in adults undergoing hip and knee arthroplasty: An observational study in a s... oleh Gustavo de Carvalho Duarte, Aguinaldo Pereira Catanoce, José Luiz Zabeu, Glaciano Nogueira Ribeiro, Mariangela Moschen, Nathália Aparecida Gonçalves deOliveira, Dante Mario Langhi, José Francisco Comenalli Marques Júnior, Alfredo Mendrone‐Junior