Hi Am I the only member of this list, willing to hit the reply key, to support summary responses from the person originally setting the question? This is a more efficient use of everybody's time. Dr Peter McCartney Health Promotion Research Unit, Dept Public Health & Policy London School of Hygiene & Tropical Medicine Room B10, Tel 0207-927-2017 Fax 0207-637-3238 Practice Tel 0207-226-7131 Mobile Tel 07956 453018 NHSnet [log in to unmask]