1 Subjects: “...Head and Neck Neoplasms / radiotherapy...”

2 “... and tumor characteristics affected relative outcomes, or whether physician experience and treatment...”

3 Subjects: “...Head and Neck Neoplasms / radiotherapy...”

4 “... in the treatment of head and neck cancer including: conventional or two-dimensional (2DRT), three-dimensional...”

5 “...Effectiveness of early diagnosis, prevention, and treatment of Clostridium difficile infection...”

6 “...Effectiveness of early diagnosis, prevention, and treatment of Clostridium difficile infection...”

7 “... elements were patient and treatment characteristics, health outcomes (overall survival, remission...”

8 “... elements were patient and treatment characteristics, health outcomes (overall survival, remission...”