Smoothly slice boundary links whose derivative links have nonvanishing milnor invariants

We give an example of a 3-component smoothly slice boundary link, each of whose components has a genus one Seifert surface, such that any metaboliser o. The boundary link Seifert form is represented by three curves o. The Seifert surfaces that form a link with nonvanishing Milnor triple linking number. We also give a generalization to m-component links and higher Milnor invariants. We prove that our examples are ribbon and that all ribbon links are boundary slice.