Three main reasons explain the presence of lead in CAM medicines: involuntary contamination (e.g. soil where CAM plants grow), voluntary use of lead for therapeutic purposes and voluntary use of lead to increase the weight of medicines (the heavier the better).
Participation was voluntary, the purpose was made clear, questions were invited, benefits explained and signatures of both the researcher and participant obtained after there was agreement to participate.
(The Administration chose not to appeal some release orders, but given its record in the court of appeals these releases were, for all practical purposes, voluntary).
Table 3 Summary of the main themes from interview data Benefits Constraints Moodle Cross-cultural sharing Use of online technologies Online discussion is time-consuming Language issues Facebook Self-introduction as a good start Unfamiliarity Lack of focus Group is too big Time constraint Unclear purposes Voluntary participation.
Our most trusted public employees, like teachers, nurses and firefighters, can't use their voluntary contributions for political purposes".
Completion of the survey was anonymous and voluntary, with the purpose of the survey explained prior to completion.
Participation in the study was voluntary and the purpose of the study was explained to students prior to distribution of the questionnaires.
A covering letter in Italian language with clear statements on the aims of the study, information confidentiality, voluntary participation and purpose of the retest, was provided to respondents.
Participation of the students was voluntary and the purpose of the study was explained to them prior to the distribution of the questionnaires.
The survey and in-depth interview addressed topics associated with the process of consent including: participants' recall of being told about study goals, procedures, benefits and risks; comprehension of study purpose, voluntary participation, reasons for participating in the study, and permission of husbands or community elders in decisions to join the genetic study.
