Sorry, didn't include link last attempt. Here it is

http://www.thesmokinggun....index.html

'Pint-sized singer' - LOL

'A physician will be on call to administer a vitamin B-12 injection '

A little googling tells me that :
Other characteristic features seen with B12 deficiency include paresthesia, inability to maintain balance when walking ( P dancing ) , weakness and excessive fatigue ( P after taping Scandalous Sex Suite ), irregular menstrual cycles ( uhhm ), and a range of psychiatric disorders including disorientation, depression, mood disturbances, irritability, and memory loss ( Now THAT explains a lot ! )