NIH:10.3325/cmj.2008.2.233
NIH:10.3325/cmj.2009.50.427
NIH:10.3325/cmj.2012.53.244
NIH:10.3325/cmj.2016.57.1
NIH:10.3325/cmj.2016.57.6
NIH:10.3325/cmj.2016.57.229
NIH:10.3325/cmj.2016.57.239
NIH:10.3325/cmj.2016.57.266
NIH:10.3325/cmj.2016.57.276