to determine how frequently and under what circumstances the chest radiograph changes pre-x-ray diagnoses and plans for management of suspected acute lower respiratory tract disease , experienced pediatricians performed a three-phased sequential evaluation ( observation , history , physical examination ) , determined an initial diagnosis and the need for a chest radiograph after each phase , and recorded pre- and post-x-ray diagnoses and plans of management .
C0220825
evaluation
C0031809
physical examination