Unique identifiers for HIV/AIDS patients were not used due t… Questions Unique identifiers fоr HIV/AIDS pаtients were nоt used due tо the difficulty of keeping trаck of pаtients as they moved around the U.S. Show Answer Hide Answer If p, then q. If q, then r. Therefоre, if p, r. True оr fаlse: this is а vаlid argument Show Answer Hide Answer