However, the duration of this immunity may last only a month to about a year.

The duration of each event lasts between nine to twelve months in each town.

The duration of the innings will last to nine minutes.

The duration may last for months or even several years.

The duration of protection should last at least for 3 weeks.

Its duration is stated as at least 18 months, but usually lasts a bit longer, 21 months in most cases.

The duration of such paralysis may last from hours to days.

The duration of attacks averages 3-7 days but may last 2-3 weeks in some individuals.

According to the event, the duration of this state may last from just a few months to many years.

The duration of summer sunlight and winter darkness lasted for approximately 5 months each.