[1] Catholic Univ Korea, Coll Med, Dept Clin Pathol, Kangnam St Marys Hosp, Seoul 137701, South Korea
[2] Seoul Med Sci Inst, Seoul Clin Labs, Seoul, South Korea
[3] Catholic Univ Korea, Coll Med, Dept Internal Med, Seoul 137701, South Korea
[4] Korea Food & Drug Adm, Seoul, South Korea
[5] Yonsei Univ, Coll Med, Dept Lab Med, Seoul, South Korea