@article {Williams237, author = {U E Williams}, title = {Calabar, Nigeria}, volume = {9}, number = {4}, pages = {237--239}, year = {2009}, doi = {10.1136/jnnp.2009.182436}, publisher = {BMJ Publishing Group Ltd}, issn = {1474-7758}, URL = {https://pn.bmj.com/content/9/4/237}, eprint = {https://pn.bmj.com/content/9/4/237.full.pdf}, journal = {Practical Neurology} }