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Johansson RS, Vallbo AB.Johansson RS, et al. Among authors: vallbo ab.Brain Res. 1980 Feb 24;184(2):353-66. doi: 10.1016/0006-8993(80)90804-5.Brain Res. 1980.PMID: 7353161
Hulliger M, Nordh E, Thelin AE, Vallbo AB.Hulliger M, et al. Among authors: vallbo ab.J Physiol. 1979 Jun;291:233-49. doi: 10.1113/jphysiol.1979.sp012809.J Physiol. 1979.PMID: 480210Free PMC article.