KA conceived of the study, and participated in its design, study registration, sample collection and coordination and drafted the consecutive versions of the paper.
The Authors would like to thank Hanna Joosten, data manager at the Department of General Practice, VU University Medical Centre, Amsterdam, for helping us out by estimating the feasibility of the trial based on a registration sample of the Academic Network of General Practitioners (GPs) of the Department of General practice of the VU medical centre.
Invitation letters are sent by the ONS team to the informants in death registrations sampled for the study, inviting them to take part and explaining how they had been identified.
Between the centers recruitment process (and numbers) varied.> -wrap-foot> *Droutsunknownknown addresses, deceased or verbal communication problems, occupational reasons, refused…) **ROS Registration Office Sample ***CS Convenience Sample.
The two new Democratic polls both used "registration based samples" -- samples drawn from official lists of registered voters -- and used the past turnout and partisanship data available on those lists to model the likely electorate.
The authors of the data this study utilizes, by contrast, estimate AFM (IMR) through a variety of sources including vital registration systems, sample registration systems, and nationally representative survey/census data [ 43, 44].
Great efforts have been made, initially in developed countries, to establish standards of good practice for informed consent, clinical trial registration and sample collection and storage in biobanks, and these are now being enforced in newly industrialized countries such as China and India.
Interviews were conducted by telephone July 8-12, 2011, using a national registration-based sample.
Upon registration of samples, RNA was extracted using Qiagen Universal liquid handling system (PAXgene extraction kits as per the manufacturer's protocol).
We also thank Bjørn Høyheim and Anna Sonesson for storage and registration of samples and data, Roy Danzmann for providing microsatellite primer sequences, Hege Munck and Katrine Hånes for genotyping assistance and Tone Hæg Lindholm for DNA extraction and genotyping assistance.
This concern is of particular important in many low and lower-middle income countries, where availability of reliable population registration for sampling frame become major barriers to conduct and to obtain high quality surveys.
