Specific Rules #3 for Author/Editor (required) for Contributions to Books Vancouver Style: Given names containing punctuation, a prefix, a preposition, or particle

Disregard hyphens joining given (first or middle) names.

Jean-Louis Lagrot becomes Lagrot JL

Use only the first letter of given names and middle names if they contain a prefix, a preposition, or another particle.

D'Arcy Hart becomes Hart D

W. St. John Patterson becomes Patterson WS

De la Broquerie Fortier becomes Fortier D

Craig McC. Brooks becomes Brooks CM

Disregard traditional abbreviations of given names. Some non-US publications use abbreviations of conventional given names rather than single initials, such as St. for Stefan. Use only the first letter of the abbreviation.

Ch. Wunderly becomes Wunderly C

C. Fr. Erdman becomes Erdman CF

For non-English names that are romanized (written in the roman alphabet), capitalize only the first letter if the original initial is represented by more than one letter.

Iu. A. Iakontov becomes Iakontov IuA

G. Th. Tsakalos becomes Tsakalos GTh

Según:

Citing Medicine: The NLM Style Guide for Authors, Editors, and Publishers [Internet]. 2nd edition. Chapter 2: Books

Related:

General Rules for Author/Editor (required) for Contributions to Books Vancouver Style

Specific Rules #1 for Author/Editor (required) for Contributions to Books Vancouver Style: Surnames with hyphens and other punctuation in them

Specific Rules #2 for Author/Editor (required) for Contributions to Books Vancouver Style: Other surname rules

Specific Rules #3 for Author/Editor (required) for Contributions to Books Vancouver Style: Given names containing punctuation, a prefix, a preposition, or particle

Specific Rules #4 for Author/Editor (required) for Contributions to Books Vancouver Style: Degrees, titles, and honors before or after a personal name

Specific Rules #5 for Author/Editor (required) for Contributions to Books Vancouver Style: Designations of rank in a family, such as Jr and III

Specific Rules #6 for Author/Editor (required) for Contributions to Books Vancouver Style: Names in non-roman alphabets (Cyrillic, Greek, Arabic, Hebrew, Korean) or character-based languages (Chinese, Japanese)

Specific Rules #7 for Author/Editor (required) for Contributions to Books Vancouver Style: Non-English words for editor

Specific Rules #8 for Author/Editor (required) for Contributions to Books Vancouver Style: Organizations as author

Specific Rules #9 for Author/Editor (required) for Contributions to Books Vancouver Style: Options for author names

Examples for Author/Editor (required) for Contributions to Books Vancouver Style