Unknotting Lagrangian ${\mathrm{S}}^1\times {\mathrm{S}}^{n-1}$ in ${\mathbb{R}}^{2n}$

Lagrangian embeddings ${\mathrm{S}}^1\times {\mathrm{S}}^{n-1}\hookrightarrow {\mathbb{R}}^{2n}$ are classified up to smooth isotopy for all $n\ge 3$.