Database: thrombosis_prediction
Question: Among the patients who has a normal level of anti-centromere and a normal level of anti-SSB, how many of them are male?
SQL: SELECT COUNT(DISTINCT T1.ID) FROM Patient AS T1 INNER JOIN Laboratory AS T2 ON T1.ID = T2.ID WHERE T2.CENTROMEA IN ('negative', '0') AND T2.SSB IN ('negative', '0') AND T1.SEX = 'M'