The process involved gathering primary literature data on the metabolic make up of the human tissue or related mammals if human-specific data was scarce.
The following information was extracted to summarize the articles: first author, publication year, country where study was conducted, characteristics of the PBF program, study objective (implicit or explicit), sample size, data gathering techniques, primary data analysis approach and main results of the study in relation to our focus.
The research adopted a mixed-method case study model that combines secondary sources and primary data gathering through semi-structured interviews of 25 returned market survivors, supported by 15 expert interviews among local and other government officials, practitioners and academics who are engaged in disaster management and urban planning.
Cataloguing and monitoring involved primary data gathering and five site visits (March 2009, February 2010, November 2010, November 2013 and March 2014), each lasting between 5 and 10 days, involved engagement with health, education and government personnel (key informants) and rightsholders.
Since our primary interest was in gathering Spanish data, if a potential participant was bilingual, he/she was asked to complete the Spanish language questionnaire.
Biological evolution is a complex concept that requires gathering relevant data, and teaching it in primary schools can be quite difficult.
Focus groups are particularly suited to studying diverse perspectives to gain insight into participants' experiences [ 19, 20] and were the primary means of gathering data, where possible.
