Study design of a stepped wedge cluster randomized controlled trial to evaluate the effect of a locally tailored approach for preconception care – the APROPOS-II study
2014 ◽
Vol 22
(12)
◽
pp. 1609-1617
◽
2020 ◽
Vol 84
(1)
◽
pp. S5-S11
2020 ◽
Vol 48
(5)
◽
pp. 511-516
◽
2017 ◽
Vol 60
◽
pp. 96-104
◽