The entire procedure usually takes about 30 minutes but may take longer.

This entire procedure takes at least five to seven hours.

The entire procedure had required more than two hours and a half.

The entire procedure takes about 35 minutes and requires a hospital stay of just two to three days.

The entire procedure had taken little more than a minute.

The entire procedure generally takes about 15 to 20 minutes.

The entire procedure took a total of 18 minutes to complete.

The entire procedure may take up to 6 hours to complete.

No one seemed to think there was anything strange about the entire procedure.

The entire procedure had taken less than half an hour.