1.
A prospective social and molecular investigation of gonococcal transmission
by Ward, Helen
The Lancet (British edition), 2000, Vol.356 (9244), p.1812-1817

2.
Diagnosis of deep-vein thrombosis: comparison of clinical evaluation, ultrasound, plethysmography, and venoscan with X-ray venogram
by Sandler, D A
The Lancet (British edition), 1984, Vol.2 (8405), p.716-719
