A. Vail
发表
J. Hewison,
L. Page,
C. McCourt,
1998,
Birth.
J. Hewison,
C. McCourt,
S. Beake,
1999,
Journal of public health medicine.
C. Mccourt,
S. Beake,
L. Page,
1998,
Journal of evaluation in clinical practice.
N. Freemantle,
D. Petty,
D. K. Raynor,
2002
.
H. Moore,
C. Summerbell,
D. Greenwood,
2001,
Statistics in medicine.
A. Vail,
D. Petty,
J. Nunney,
2000
.