Liability and contra liability accounts are usually classified (put into distinct groupings, categories, or classifications) on the balance sheet. The liability classifications and their order of appearance on the balance sheet are: 1  Current Liabilities.  Long Term Liabilities.
1 Duchenne. 2  The most common form of muscular dystrophy in children, Duchenne muscular dystrophy affects only males. 3  It appears between the ages of 2 and 6. 4  The muscles decrease in size and grow weaker over time yet may appear larger.
The Most Common Types of MD. Duchenne MD is the most common form of muscular dystrophy and is caused by the absence of the protein dystrophin. This is a devastating disorder that progresses rapidly, with most sufferers (who are almost all boys) unable to walk by age 12 and needing a respirator to breathe.