Anti-Inflammatory Agents, Non-Steroidal--therapeutic use Attitude of Health Personnel Clinical Competence Evidence-Based Medicine Exercise Therapy Family Practice--statistics & numerical data Guideline Adherence--statistics & numerical data Health Care Surveys Health Knowledge, Attitudes, Practice Humans Low Back Pain--diagnosis Musculoskeletal Diseases--rehabilitation Orthopedic Procedures Orthopedics--statistics & numerical data Pain Measurement Physical Therapy Specialty Physician-Patient Relations Practice Guidelines as Topic Practice Patterns, Physicians'--statistics & numerical data Radiology--standards Surveys and Questionnaires Work Capacity Evaluation