Twelve nurses and technicians here, found to be having forged certificates, have been banned from performing their duties. Hussein Al-Rawi Al-Ruwaili, Director of Health Affairs in Al-Ahsa, said the Asian nurses, and technicians have been referred to security authorities for action. Dr. Al-Ruwaili attributed the discovery of false certificates to the great efforts exerted by the Saudi Council of Health Specialties in scrutinizing the certificates of all workers in the medical field.