共 7 条
[1]
BAKER R, 1990, BRIT J GEN PRACT, V40, P487
[4]
Murphy AW, 1996, BRIT MED J, V312, P1135
[5]
Poulton BC, 1996, BRIT J GEN PRACT, V46, P26
[6]
REES M, 1992, NURS TIMES, V6, P32
[7]
*SEC STAT HLTH, 1997, CM3807