AndrioloLAltamuraSARealeDCandrianCZaffagniniSFilardoG. Nonsurgical treatments of patellar tendinopathy: multiple injections of platelet-rich plasma are a suitable option: a systematic review and meta-analysis [published online March30, 2018]. Am J Sports Med. doi:10.1177/0363546518759674.
2.
ColemanBDKhanKMMaffulliNCookJLWarkJD. Studies of surgical outcome after patellar tendinopathy: clinical significance of methodological deficiencies and guidelines for future studies. Victorian Institute of Sport Tendon Study Group. Scand J Med Sci Sports. 2000;10(1):2-11.
3.
CookDJGuyattGHWillanAet al. Should unpublished data be included in meta-analyses? Current convictions and controversies. JAMA. 1993;269:2749-2753.
4.
GregoireGDerderianFLe LorierJ. Selecting the language of the publications included in a meta-analysis: is there a Tower of Babel bias?J Clin Epidemiol. 1995;48:159-163.
5.
LemeshowARBlumREBerlinJAStotoMAColditzGA. Searching one or two databases was insufficient for meta-analysis of observational studies. J Clin Epidemiol. 2005;58(9):867-873.
6.
MoherDLiberatiATetzlaffJAltmanDG; PRISMA Group. Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement. PLoS Med. 2009;6(6):e1000097.
7.
MorrisonAPolisenaJHuttonBet al. The effect of English-language restriction on systematic review-based meta-analyses: a systematic review of empirical studies. Int J Technol Assess Health Care. 2012;28(2):138-144.
8.
SchmuckerCMBlümleASchellLKet al. Systematic review finds that study data not published in full text articles have unclear impact on meta-analyses results in medical research. PLoS ONE. 2017;12(4):e0176210.
9.
SterneJAEggerMSmithGD. Systematic reviews in health care: investigating and dealing with publication and other biases in meta-analysis. BMJ. 2001;323(7304):101-105.
