Surgery / Research Design / Systems Analysis / Medical errors / Humans / System Approach / Clinical Sciences / Reproducibility of Results / Postoperative Complications / System Approach / Clinical Sciences / Reproducibility of Results / Postoperative Complications
Program Evaluation / Health Promotion / Research Design / Evaluation / Physical Activity / Brazil / Public Health / Health Services Research / Adolescent / Urban Health / Observation / Humans / Child / Public / RECREATION / Female / Male / Exercise / Data Collection / Aged / Middle Aged / Observer Variation / Adult / Time Factors / Physical Exercise / Public Facilities / Brazil / Public Health / Health Services Research / Adolescent / Urban Health / Observation / Humans / Child / Public / RECREATION / Female / Male / Exercise / Data Collection / Aged / Middle Aged / Observer Variation / Adult / Time Factors / Physical Exercise / Public Facilities
Program Evaluation / Health Promotion / Research Design / Evaluation / Physical Activity / Brazil / Public Health / Health Services Research / Adolescent / Urban Health / Observation / Humans / Child / Public / RECREATION / Female / Male / Exercise / Data Collection / Aged / Middle Aged / Observer Variation / Adult / Time Factors / Physical Exercise / Public Facilities / Brazil / Public Health / Health Services Research / Adolescent / Urban Health / Observation / Humans / Child / Public / RECREATION / Female / Male / Exercise / Data Collection / Aged / Middle Aged / Observer Variation / Adult / Time Factors / Physical Exercise / Public Facilities