Hold the line, please http://www.iobm.co.uk/welcome/efficiency/ revatio dose for erectile dysfunction Our guides led us through underground passages to two escalators, the first of which was working, depositing crowds of people on the landing leading to the second one, which was stationary. Groups became separated from their guides and each other in the melee and there was no help for people with walking difficulties. Meanwhile, the crowd on the landing continued to grow and it would only have taken one person to faint to have caused an incident.