共 33 条
[2]
Bedford D, 1997, IRISH MED J, V90, P231
[4]
Cornford CS, 1999, BRIT J GEN PRACT, V49, P281
[6]
Furey A, 2001, Commun Dis Public Health, V4, P183
[9]
Hull S, 2002, BRIT J GEN PRACT, V52, P712
[10]
Hutchinson H L, 1995, J Am Board Fam Pract, V8, P448