Answers are grounded in this paper and cite their sources.
SINCE 1986 MODIFIED versions of the yellow card have been included in both NHS prescription pads and the back of the British National Formulary.As a result of their greater accessibility the total number of suspected adverse drug reactions reported on yellow cards in 1986 was much greater than ever before (table I).
No takes yet. Share an insight, caveat, or question.
L et al. (1988) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: