Dakta Syarifuddin Nasution, babbab likitan sashen haihuwa a yankin Mandailing Natal ya shiadawa jaridar Birtaniya cewar yana zargin wani sinadari dake gurbata iska (Mercury) da kuma wata kwayar cuta (Rubella Virus) a matsayin dalilin haihuwar jaririn cikin wannan yanayi.
