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MacLean WE Jr, Noll RB, Stehbens JA, Kaleita TA, Schwartz E, Whitt JK, Cantor NL, Waskerwitz M, Ruymann F, Novak LJ, et al.MacLean WE Jr, et al. Among authors: stehbens ja.Arch Neurol. 1995 Feb;52(2):156-60. doi: 10.1001/archneur.1995.00540260060017.Arch Neurol. 1995.PMID: 7848124Clinical Trial.