1.   The studies were approved by the ethics committee, and all volunteers gave written informed consent.

2.   Fifteen healthy volunteers gave written informed consent to participate.

3.   Fellow literacy volunteers are giving him canned goods.

4.   Passengers in large cities such as Lille and Lyon spent the night in emergency lodgings in sports halls or youth hostels, where Red Cross volunteers gave them breakfast.

5.   Six hundred volunteers give thousands of hours.

6.   Then the volunteers will give blood and urine samples four times in the following three days.

7.   Volunteers give free tours.

8.   Pakistan regularly launches door-to-door polio vaccination campaigns in which volunteers gives polio drops to millions of children aged below five.

9.   Other elements have to be planned, and it is crucial that volunteers give their consent only after being fully informed of the risks, Piot said.

10.   Early this year, volunteers gave him lessons for three months to prepare him for mainstream education in the classroom.