en: " The reasons behind the increase in incidence are more complex and we are only just beginning to understand the risk factors , " he said . However , he said , The reasons behind the increase in incidence are more complex and were just beginning to understand the risk factors .
ms: "Sebab di sebalik peningkatan kejadian itu lebih kompleks dan kita hanya mula memahami faktor risiko," katanya. Bagaimanapun, katanya, sebab di sebalik peningkatan kejadian itu lebih kompleks dan baru mula memahami faktor risiko.