?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=PJ&rft.au=Lucas%2C+PJ&rft.aulast=Lucas&rft.issn=1471-2288&rft.title=BMC+MED+RES+METHODOL&rft.atitle=Worked+examples+of+alternative+methods+for+the+synthesis+of+qualitative+and+quantitative+research+in+systematic+reviews&rft.volume=7&rft.date=15+January+2007&rft.genre=article