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.
FEIN is used to file business taxes. Sales and Use Tax Number is used to file Sales Taxes. Employers Identification Number can be requested to IRS to cancel. State ID can we cancelled by filing final sales tax return. State Tax Identification Number is also known as Certificate of Authority, Reseller Permit, Sales and Use Tax Number.