This association was replicated in different populations and confirmed by meta-analysis although some studies denied this association [ 23- 29].
There is some controversy in the literature whether or not there are significant gender differences in the manifestation of school refusal and truancy with some studies denying any differences [ 1, 2], whereas others are pointing to trends for females showing school refusal and males showing truancy more frequently [ 7, 15].
The relatively young people studied deny discomfort with this.
Several of the brokers named in the study denied that they ever discriminated against minorities and questioned Acorn's methods and its objectivity.
A spokesman for the company that owns Philip Morris, whose Marlboro menthol brands are among those cited in the study, denied Wednesday that it has adjusted menthol levels as a way to lure young smokers.
Sure, there is plenty reason to be skeptical of the research itself (after all, these are some of the same people who published that much-publicized -- and discredited -- study denying male bisexuality).
Further study denied multiple myeloma.
All workers participating in the study denied vitamin B12 supplementation or beer drinking (which are potential confounders as sources of Co) over the week preceding the study.
From the three studies that have previously analyzed this, one study denies the prognostic value of FAK in adenocarcinomas of the colon [ 16], whereas the other two studies have provided evidence for the prognostic value of immunohistochemically detected FAK expression in esophageal squamous carcinoma and in hepatocellular carcinoma, respectively [ 15, 17].
The interaction of BDNF and the APP promoter is still not that clear as it is for NGF: one study denies an upregulation of APP mRNA after BDNF treatment (Rossner et al. 1998), while other reports state upregulation in SH-SY5Y cells mediated by MAPK/Ras and PI3/Akt (Ruiz-Leon & Pascual 2004) or promoter activity in PC12 cells (Ge & Lahiri 2002).
