11:47 Jul 23, 2010 

) Department of Surgery, Stobhill Hospital, Glasgow, UK

http://www.springerlink.com/content/l4g2425368433556/
Résumé Cent quarante et un patients ayant une dysphagie en rapport avec un cancer oesogastrique, prouvé histologiquement, et ayant eu un traitement par laser YAG ont été évalués prospectivement. La DATE DE POINT a été Novembre 1988.
Abstract A group of 141 patients with biopsy-proved malignant dysphagia, treated with neodymium YAG laser between April 1985 AND NOVEMBER 1988, have been prospectively evaluated. Patients treated SINCE NOVEMBER 1988 have not been included to allow minimum follow-up of 18 months.

10:43 Jul 23, 2010 

If October 2009 (or before) then the "date de point" would presumably be "start date" (Though what are these 150 events? How frequent are they?) If it's October 2010, then it would have to be "end date".