they are united, that the malaysian authorities have been hiding the truth and that they will get their punishment. all of them. family members stood up and walked out. this hotel has been their environment for weeks now, stuck in the cycle of meetings, recrimination and anger. now they say they want to go to kael to complain. david mckenzie, cnn, beijing. >> the families' frustration certainly adds to their grief. you can see it on their faces. for three weeks now, they have had to deal with competing emotions, unrelenting fear, while clinging to hope. sometimes those emotions certainly boil over into deep anger. it's hard to imagine those -- the agony those families are going through right now. our chief medical correspondent, dr. sanjay gupta, is joining us now from the cnn center in atlanta. sanjay, we have seen these family members crying, even collapsing from the strain carried out on gurneys, wheelchairs. what's the physical impact of