[1] Univ Fed Santa Maria, Med Acad, Curso Med, BR-97119900 Santa Maria, RS, Brazil
[2] Univ Fed Santa Maria, Serv Radiol, Hosp Univ Santa Maria, Curso Med, BR-97119900 Santa Maria, RS, Brazil
[3] Univ Fed Santa Maria, Serv Cirurgia, Hosp Univ Santa Maria, Curso Med, BR-97119900 Santa Maria, RS, Brazil
[4] Univ Fed Santa Maria, Serv Infectiol, Hosp Univ Santa Maria, Curso Med, BR-97119900 Santa Maria, RS, Brazil
[5] Univ Fed Santa Maria, Disciplina Diagnost Imagem, BR-97119900 Santa Maria, RS, Brazil