them, they would have to wear a suit and a special infection-proof suit, if you will, and they won't be able to get within two meters of where their boys are. so they won't be able to give them hug, at least initially, that you can imagine that they would want to give them. but shortly thereafter, they would be able to do that. and we expect them to remain in the hospital for five to seven days, maybe longer than that, under observation to make sure no other symptoms from any other kind of illness develops, so their recovery goes as smoothly as possible. >> all right, matt rivers, thank you so much. and we're thinking of those four that still remain, those four boys as we look at those images in that cave. i'm joined now by cave rescue expert, an ma mirza, and dr. carl lieberman, thank you both for being here. dr. lieberman, let's talk about the mental state of these young boys. how optimistic they may be. and if they even know that the eight got out safely. hopefully that message is getting to them. but what does that do to their mental state, to know that their