Complex sentence: In this study vitamin K 1 was also tested, in an attempt to make connections between vitamin K 1 intake and calcification reduction; only vitamin K 2 (as MK-4) was found to influence warfarin-induced calcification in this study.
Split into simpler sentences: In this study vitamin K 1 was also tested, in an attempt to make connections between vitamin K 1 intake and calcification reduction. Only vitamin K 2 (as MK-4) was found to influence warfarin-induced calcification in this study.