Early life factors, childhood cognition and postal questionnaire response rate in middle age : the Aberdeen Children of the 1950s study
Citation
Nishiwaki , Y , Clark , H , Morton , S M & Leon , D A 2005 , ' Early life factors, childhood cognition and postal questionnaire response rate in middle age : the Aberdeen Children of the 1950s study ' , BMC Medical Research Methodology , vol. 5 , 16 . https://doi.org/10.1186/1471-2288-5-16