XML to CSV using XSLT

Hi All

I am looking for an intelligent efficient XSLT which does convert an XML document to CSV data. It should take care of all possible elements in the child nodes.
For example, the XML looks like this

<?xml version="1.0" encoding="ISO-8859-1"?>
<sObjects>
<sObject>
<Name>Raagu</Name>
<BillingStreet>Hoskote</BillingStreet>
</sObject>
<sObject>
<Name>Rajath</Name>
<BillingStreet>BTM</BillingStreet>
<age>25</age>
</sObject>
<sObject>
<Name>Sarath</Name>
<BillingStreet>Murgesh</BillingStreet>
<location>Bangalore</location>
</sObject>
</sObjects>

And my out put CSV should look like this

Name,BillingStreet,age,location
Raagu,Hoskote,,
Rajath,BTM,25,
Sarath,Murgesh,,Bangalore


All the rows should have fields for all the keys in the CSV even though if the XML does have a value for it.

Could you please help me achieve this using XSLT code ?