Other abbreviations to be avoided include, 

Term	Abbreviation
chemical elements or compounds	KCl for potassium chloride, Hg for mercury (although may be used as part of a unit, for example, 'mmHg')
Latin abbreviations for dosing should not be used. Doses should always be written in full and in English throughout the text and tables.	qd, bd, bid, bds, qds, qid, tds, tid
month	mo
week	wk
weight	wt
year	yr