@article{ae7b48c00d6e4a969bd6ce6c98ebd8c2,
title = "Large-scale loyalty card data in health research",
keywords = "Health behaviour, SWOT, food expenditure, loyalty card data, participation, purchases, sales data, Health behaviour, SWOT, food expenditure, loyalty card data, participation, purchases, sales data",
author = "Jaakko Nevalainen and Maijaliisa Erkkola and Hannu Saarij{\"a}rvi and Turkka N{\"a}ppil{\"a} and Mikael Fogelholm",
year = "2018",
doi = "10.1177/2055207618816898",
language = "English",
volume = "4",
}