Artificial insemination techniques available include intracervical insemination and intrauterine insemination. Severe pre-eclampsia is a significant risk factor for intrauterine fetal death. In people, risks for preterm delivery and intrauterine growth retardation have been associated with exposure. Fetal intrauterine hiccups are of two types. This leads to intrauterine fetal death. Intrauterine and neonatal lead exposure promote tooth decay. Pregnancy can be avoided with the use of contraceptives such as condoms and Intrauterine devices. Use of intrauterine devices have also shown to reduce menorrhagia and dysmenorrhea. There is some evidence that intrauterine parvovirus B19 infection leads to developmental abnormalities in childhood. On the fourth cycle of intrauterine insemination, Danielle became pregnant with the quintuplets. Examples include trophic eggs in the uterus, or even intrauterine cannibalism. Levonorgestrel is the active ingredient in a number of intrauterine devices including Mirena and Skyla. There are two types of stillbirth, including intrauterine death and intrapartum death. Intrauterine and neonatal insults (many of which are infectious) increase the risk. Pelvic actinomycosis is a rare but proven complication of use of intrauterine devices.