A Syrian doctor told ITV News that his makeshift medical centre in Homs is forced to use out-of-date medicine and an operating theatre without fresh, clean water.
Dr Mosab wrote: "We have to drink from polluted wells and wash in the sewage water. We eat leaves and rotten rice
"Sick people here do not die due to medical treatment, but because of hunger and severe malnutrition, unhealed wounds, severe lack of food and absence of basic human necessities."
More top news
Rescue workers are at the site Sunday morning trying to cut open mangled coaches.
Despite chilly temperatures it will be a mostly dry day, and milder than yesterday.
The Sunday Times alleges a missile malfunctioned after launch during a routine test of the UK's nuclear deterrent last year.