Funding {4}
NWA.1160.18.300
The study is sponsored by the Dutch Research Council (Nederlandse Organisatie voor Wetenschappelijk Onderzoek, NWO) in the framework of the Nationale Wetenschapsagenda—Onderzoek op Routes door Consortia Call (NWA.1160.18.300) and by Bedrocan International BV, Veendam, the Netherlands.The funding bodies have no role in the design of the study, collection, analysis and interpretation of the data, and in the writing of any manuscripts.