Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
QTcBZT: QTc proposed by Bazett; QTcDMT: QTc proposed by Dmitrienko; QTcFRD: proposed by Fridericia; QTcFRM: QTc proposed by Framingham; QTcHDG: QTc proposed by Hodges; QTcRTHa: QTc proposed by Rautaharju.
