The two medics, who were sent into the war zone by the pro-Palestinian aid organisation NORWAC on December 31, said they had seen clear signs that Dense Inert Metal Explosives (DIME), an experimental kind of explosive, were being used in Gaza.
"This is a new generation of very powerful small explosives that detonates with an extreme power and dissipates its power within a range of five to 10 metres (16-98 feet)," said Gilbert, 61.
"We have not seen the casualties affected directly by the bomb because they are normally torn to pieces and do not survive, but we have seen a number of very brutal amputations... without shrapnel injuries which we strongly suspect must have been caused by the DIME weapons," he added.
The weapon "causes the tissue to be torn from the flesh. It looks very different (from a shrapnel injury). I have seen and treated a lot of different injuries for the last 30 years in different war zones, and this looks completely different," said Fosse, 58.
"If you are in the immediate (vicinity of) a DIME weapon, it's like your legs get torn off. It's an enormous pressure wave and there is no shrapnel," he explained.
"Israel should disclose what weapons they use and the international community should make an investigation," he said, stressing the amount of damage apparently caused by the new form of explosive.
