Thanks also to the Mayo Clinic. This book has increased my appreciation of their skilled care of my case by showing the many ways that things could go wrong. Footnotes are indicated by "[Footnote]" where they appear in the text. The body of the footnote appears immediately following the complete paragraph. If more than one footnote appears in the same paragraph, they are numbered. A few obvious misspellings have been corrected. Several cases of alternate spelling of the same(?) word have not been modified
