This week, the Beyond the Byline podcast looks into the critical situation unfolding in Gaza's hospitals as Israel continues its military operations in the strip.Medical centres - once a refuge for civilians - have been struggling to continue to operate with their fuel, electricity and medical supplies cut off. On Wednesday, the Israel Defence Forces raided Gaza's biggest hospital, Al-Shifa, saying that Hamas militants were hiding out beneath the building.Doctors and aid workers on the ground have put out calls for a ceasefire, with the United Nations relief chief stating that "hospitals are not battlegrounds".We discussed the critical situation in Gaza's medical facilities with Christian Lindmeier, a spokesperson at the World Health Organisation (WHO).