Second, we are aware that the number of patients was relatively small which could limit the external validity of the study, and that complementary data are needed to confirm the result.
First, we are aware that the number of patients included was relatively small which could limit the external validity of the study, and that complementary data are needed to confirm the results.
Although the first author 'fought familiarity' [ 27] when doing the field work during the first three months in Sweden, complementary data were needed from the Swedish context after the six months in England to saturate the emergent theory, hence the second data collection period in Sweden.
Exposure data were preferably collected from internationally harmonized sources (Table 2), but in the case of benzene, dioxins, formaldehyde, and lead, complementary national data were needed.
As a consequence, the number of available NMR spectroscopy data is often sparse and new approaches to provide complementary NMR spectroscopy data are needed.
If diagnoses or cut-offs were ambiguous, they were discussed in clinical supervision (SJ), and if needed, complementary data was gathered through an additional telephone interview.
It is necessary to check whether the observed trends continue or disappear in the following years, and complementary data analyses are needed in order to assess whether, associated or not with the increasing trends, there is spatial clustering of cases that can share the same aetiology.
These complementary data were not included in the further analyses.
High resolution structural data on these systems as well as information gathered from multiple complementary analytical techniques is needed, from both a fundamental and a pharmaceutical perspective.
A data connection is needed.
