cie4dCardiac implantable electronic devices (CIED), or Cardiac Rhythm Management Devices (CRMD), are a very common medical device. The number of implanted cardiovascular devices has dramatically increased in recent years. ManyCIE4D EJournal Lembaga Einstein College adalah jurnal akses terbuka yang mempublikasikan artikel ilmiah di bidang ilmu kimia dan pendidikan kimia.