Show 10 5 10 15 20 50 100 250 Sort by year (new to old) Actions Download search results Subscribe to news feed Your filters: cql: author="Erkkola, Risto" or (type exact bookEditor and editor="Erkkola, Risto") Add to list Journal Article A1 A 60-month non-comparative study on bleeding profiles with the levonorgestrel intrauterine system from the late transition period to estrogen supplemented menopause Herman Depypere (UGent) , Timothy Hillard, Risto Erkkola, Michael Kunz, Pia Rautiainen and Jan HN Schram (2010) EUROPEAN JOURNAL OF OBSTETRICS & GYNECOLOGY AND REPRODUCTIVE BIOLOGY. 153(2). p.176-180