If you are close to ovulation, EC may not be able to prevent pregnancy if you wait 5 days. Therefore, the best thing to do is take EC as soon as you can get it. A thorough and up-to-date academic review of the medical and social science literature on emergency contraception is available here .
Employer Identification Number - EIN. A unique identification number that is assigned to a business entity so that they can easily be identified by the Internal Revenue Service. The Employer Identification Number is commonly used by employers for the purpose of reporting taxes.
IMEI or Inteational Mobile Equipment Identity number is a code having 15-17 digits which can be used to identify any phone on a network. This number is very important for security purposes as this can be used to identify lost or stolen phones. But if you are looking for a way to change your IMEI number on your iPhone or simple have a personalized IMEI code, there is a way using ZiPhone to do the same.