Recruitment methods in Alzheimer´s disease research: general practice versus population based screening by mail
: Andersen F, Engstad T A, Straume B, Viitanen M, Halvorsen D S, Hykkerud S, Sjøbrend K
: 2010
: BMC Medical Research Methodology
: 35
: 10
: 7
: 1471-2288
DOI: https://doi.org/10.1186/1471-2288-10-35