Efficacy of treatment immune thrombocytopenic purpura in pregnancy with corticosteroids and intravenous immunoglobulin: a prospective follow-up of suggested practice - Wegnelius, G; Bremme, K; Lindqvist, P G; on the behalf of Hem-ARG, a reference, working group of obstetricians regarding hematological issues in Obstetrics, Gynecology under the auspices of the Swedish Society of Obstetrics, Gynecology (Blood Coagul Fibrinolysis, 2018)