Sources are not in proper format, but here they are anyway! 

http://faculty.webster.edu/corbetre/haiti/voodoo/terms.htm

ZOMBIES

2. https://www.harvardmagazine.com/2017/10/are-zombies-real

3. Mar Drugs. 2015 Oct; 13(10): 6384–6406.

Published online 2015 Oct 19. doi: 10.3390/md13106384

PMCID: PMC4626696

PMID: 26492253

Tetrodotoxin, an Extremely Potent Marine Neurotoxin: Distribution, Toxicity, Origin and Therapeutical Uses

Jorge Lago, Laura P. Rodríguez, Lucía Blanco, Juan Manuel Vieites, and Ana G. Cabado*

Paul Long, Academic Editor

4. Zombies and Tetrodotoxin

TERENCE HINES

Volume 32, Issue 3 SKEPTICAL INQUIRER