Effect of combinations of drugs on all cause mortality in patients with ischaemic heart disease: nested case-control analysis

increased administration of fentanyl or diazepams to pregnant women, which increase risks to the women and costs to the health provider, undermine the interests of the women and are unnecessary for fetuses, who have not yet reached a developmental stage that would support the conscious experience of pain.I thank Peter Gianaros for critiquing an earlier version of this manuscript, Ian Apperly