Specifically I think of children on (1) NSAIDS, (2) systemic steroids, and (3) in critically ill children (i.e., stress ulcer prophylaxis)? What medications are recommended and which doses should be used? Does the start of a prophylaxis depend on (1) planned duration of the NSAIDs/steroid treatement (or do you start prophylaxis in any case?), (2) the dosages of NSAIDs/steroids applied, (3) the type of NSAIDS used, and (4) the presence of certain risk factors (like in adults)? However, if there are no widely acknowledged recommendations (I am afraid this is the case) how do you handle this problem in your hospital/department?