1. E-mail for conducting surveys;Lowen;Am J Health-Syst Pharm,1997
2. Using the internet for data collection in nursing research;Lakeman;Comp Nurs,1997
3. ‘So Much post, so busy with practice—So, no time!’: A telephone survey of general practitioners' reasons for not participating in postal questionnaire surveys;Kaner;Br J Gen Prac,1998
4. Online medical surveys: Using the internet as a research tool;Houston;MD Comput,1998
5. Response rates to mail surveys published in medical journals;Asch;J Clin Epidemiol,1997