Knee Surgery Sports Traumatology Arthroscopy · 2014 · 11 citations · 40 references
III.
40
R: A Language and Environment for Statistical Computing
R Core Team · 2000 · 352.8K citations · Full text
A 12-Item Short-Form Health Survey
John E. Ware, Mark Kosinski, Susan Keller · Medical Care · 1996 · 16.7K citations
Nicholas Bellamy, W. Watson Buchanan, Charles H. Goldsmith et al. · PubMed · 1988 · 7.8K citations
Parallel Trial, Non-operative Management, Health Status Instrument +19