Resource	Study.Roster
Method	GET
Purpose	Obtain a list of existing roleholders for a study
Client sends …		Request	GET roster-URI
		Header	Host: host
		Header	Date: date
		Header	Authorization: yosokumo user-identifier:request-digest
		Header (optional)	Accept: content-type(s)
		Header (optional)	Accept-Encoding: content-encoding(s)
Server returns …	Success	Code	200 OK
		Header	Date: date
		Header	Content-Type: content-type
		Header (conditional)	Content-Encoding: content-encoding
		Header (conditional)	Content-Length: content-length
		Header	Content-MD5: content-digest
		Entity	<roster document>
	Authorization header malformed	Code	400 Bad Request
	Authorization header missing	Code	401 Unauthorized
		Header	WWW-Authenticate: yosokumo user:digest
	• Requesting user not recognized • Request digest incorrect • Requesting user lacks GET roster permission for this study	Code	403 Forbidden
	Requested URI not recognized	Code	404 Not Found
	• No supported data interchange format listed in Accept header • No supported encoding format listed in Accept-Encoding header	Code	406 Not Acceptable