haz.exposure.default    Default daily hazard of exposure
haz.late.miscarriage.stillbirth.default
                        Default daily hazard of late
                        miscarriage/stillbirth
haz.nonspont.livebirth.default
                        Default daily hazard of non-spontaneous live
                        birth
haz.spont.livebirth.default
                        Default daily hazard of spontaneous live birth
simPregProp             Simulate distributions of pregnancy outcomes
                        and gestational duration
simPregSamp             Sample pregnancies from simulated distributions
