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van der Heijden RA, Lankhorst NE, van Linschoten R, Bierma-Zeinstra SMA, van Middelkoop M. Exercise for treating patellofemoral pain syndrome. Cochrane Database of In systematic reviews we search for and summarize studies that answer a specific research question (e.g. is paracetamol effective and safe for treating back pain?). The studies are identified, assessed, and summarized by using a systematic and predefined approach. They inform recommendations for healthcare and research. 2015, Issue 1. Art. No.: CD010387. DOI: 10.1002/14651858.CD010387.pub2.
Link to Plain Language Summary: bit.ly/1HTjE4C
Very low quality evidence (GRADE)