Database: thrombosis_prediction
Question: Among the male patients who have a normal level of white blood cells, how many of them have an abnormal fibrinogen level?
SQL: SELECT COUNT(DISTINCT T1.ID) FROM Patient AS T1 INNER JOIN Laboratory AS T2 ON T1.ID = T2.ID WHERE T2.FG <= 150 OR T2.FG >= 450 AND T2.WBC > 3.5 AND T2.WBC < 9.0 AND T1.SEX = 'M'