These are delivered by skilled, trained mental health professionals, who work with the families every two weeks or so, sometimes across considerable time periods, such as one year. (healthdirect.gov.au)
«a change of climate which is attributed directly or indirectly to human activity that alters the composition of the global atmosphere and which is in addition to natural climate variability observed over considerable time periods.» (drtimball.com)
If there are too few updates and are spread across a considerable time period, it is a signal for you to know there isn't much happening on the website. (millionairedatingsites.biz)