case-report 2000 Spontaneous miscarriage of a cervical pregnancy and continuation of intra-uterine pregnancy following in vitro fertilisation and embryo transfer The Australian & New Zealand journal of obstetrics & gynaecology ·doi:10.1111/j.1479-828x.2000.tb01184.x
other 1987 Catheterisation of the fallopian tubes from the vagina The Lancet ·doi:10.1016/s0140-6736(87)90893-2