The isolated fluid has earlier been validated as representative for interstitial fluid [24].
The questionnaire used in this study had earlier been validated and used in the Andhra Pradesh Eye Disease Study. 10 The response options in the questionnaire were derived from focus-group discussions held in the community 11 and were used in previous studies.
In this study, we restricted the cohort to twins with known zygosity, as determined by questions on childhood resemblance, which had earlier been validated with DNA markers (Lichtenstein et al, 2002).
The framework has been validated earlier for mono-commodity energy systems.
Strengths include the multi-gene method of assessing proliferation, which has been validated earlier (Anjomshoaa et al, 2008) and was further validated in this study by RT PCR and an established immunohistochemical method for the measurement of proliferation.
9 The registry has been validated in earlier studies, and data completeness and validity (ie, the extent to which a record of an event corresponds to the event) are continuously monitored.
17 Information from the Western Denmark Heart Registry and the Danish National Registry of Patients has been validated in earlier studies, and the registries' data completeness and validity are continuously monitored.
Probe set 205899_at, which represents Cyclin A1 on the respective microarray platform, and which has been validated in earlier studies, was analyzed [ 19].
The pAb against uPAR has been validated in earlier studies 6, 7, 9. uPAR-immunoreactivity was seen in primarily tumor-associated macrophages (TAMs) at the invasive front in 183 of the 242 biopsies (Fig. 1A and B).
We tried to minimize the bias by using a questionnaire which has been validated in earlier large studies in the US [ 43, 44], and extensively pilot tested in India.
The Alere Detect test has been validated for early infant diagnosis of HIV-1 infection, and it is the only POC NAT device currently known to detect HIV-2, which is endemic in West Africa.
