larger than $\ell_{\rm vdW}$ corresponding to magnetic fields $B>608$ G. The expected error due to finite range corrections is $\ell_{\rm vdW}/a$ and therefore smaller than $50 \%$ in this region.

In Ref. [@Braaten:2009ey], two crossings of Efimov trimers with the atom-dimer threshold have been predicted. Both are located at the 1(23)-threshold: at $B_*=672$ G and at $B_*'\approx 597$ G. Here the index 1 denotes the atom and the index (23) the dimer. Since the atom-dimer relaxation is resonant when the trimer appears near the threshold, two resonances are expected in the rate $\beta_1$ near $B_*$ and $B_*'$. The resonance at $B_*$ is well in the universal region where all scattering lengths are much larger than $\ell_{\rm
  vdW}$ while $B_*'$ is slightly outside. Therefore, the resonance position $B_*$ should be accurately determined with corrections of order $\ell_{\rm vdW}/a_{23}\approx 10$% where the value of $a_{23}$ at the resonance was used. The position $B_*'$ is outside the universal region and can receive large non-universal corrections of order 100%. These error estimates are accurate up to a prefactor of order one. The exact value of this prefactor can only be obtained from an explicit calculation of the range corrections. Note also that these percentage 