Rome (Fides Service) - Fides Service presents a dossier of practical advice to persons about to undertake a journey in mission lands, offered to Fides by professor Kevin Cahill an expert on tropical diseases and at present Director of the Tropical Disease centre at Lenox Hill Hospital, New York which provides medical assistance to missionaries departing to or returning from mission territories. The dossier is available for our registered e-mail readers on Friday 22 November and in the near future it will be visible at www.fides.org Health section, still in the trial stage. (AP) (Fides Service 20/11/2002)