%0 Journal Article %A Hamish Reid %A Ralph Smith %A Catherine Calderwood %A Charlie Foster %T Physical activity and pregnancy: time for guidance in the UK %D 2017 %R 10.1136/bjsports-2016-097216 %J British Journal of Sports Medicine %P 1511-1512 %V 51 %N 21 %U https://bjsm.bmj.com/content/bjsports/51/21/1511.full.pdf