Stocks, N.Gunnell, D.2007-06-022007-06-022002Family Practice, 2002; 19(6):704-7040263-21361460-2229http://hdl.handle.net/2440/32772© Oxford University PressenHumansFamily PracticeHealth Services ResearchSurveys and QuestionnairesBiasA chain is as strong as its weakest link but that link could be the subject matter of the questionnaire!Journal article002002272310.1093/fampra/19.6.7040001792525000232-s2.0-003689841859197Stocks, N. [0000-0002-9018-0361]