The new study involves 630 participants in those studies who have now been followed for 54 weeks.

The study involved 322 participants and lasted for two years.

In 2008 it involved close to 700 participants and attracted over 10,000 visitors.

The findings are based on a review of results from 14 different studies involving 130,820 participants.

The study involved 110 participants (55 couples) whose photographs were taken in their first year of marriage.

The survey was performed from December 3rd through 7th, and it involved 1,489 adult participants.

Trainings usually involve 20 to 32 participants, and some 30 to 45 staff.

The program now operates in over 100 countries and annually involves some 30 million participants.

The inaugural event in 2011 was estimated to involve 12,000 participants.

With judges and organisers, this involves 500 to 1,000 participants in all.