Erratum: Do excited states exist in a system of two neutrons? [JETP Lett. 67, No. 11, 903–909 (10 June 1998)] - D. V. Aleksandrov; E. Yu. Nikol’skii; B. G. Novatskii; D. N. Stepanov; R. Wolski (Journal of Experimental and Theoretical Physics Letters, 1998)