Problem Converting Rows To A String

I try to accomplish the following:

I have two tables which are connected via a third table (N:N
relationship):

Table 1 "Locations"
LocationID (Primary Key)

Table 2 "Specialists"
SpecialistID (Primary Key)
Name (varchar)

Table 3 "SpecialistLocations"
SpecialistID (Foreign Key)
LocationID (Foreign Key)
(both together are the primary key for this table)

Issuing the following command

SELECT
L.LocationID , S.[Name]
FROM
Locations AS L
LEFT JOIN SpecialistLocations AS SL ON P.PlaceID = SL.LocationID
LEFT JOIN Specialists AS S ON SL.SpecialistID = S.SpecialistID

results in the following table:

LocationID | Name
1Specialist 1
1Specialist 2
2Specialist 3
2Specialist 4
3Specialist 1
4Specialist 4

Now my problem: I would like to have the following output:

LocationID | Names
1Specialist 1, Specialist 2
2Specialist 3, Specialist 4
3Specialist 1
4Specialist 4

....which is grouping by LocationID and concatenating the specialist
names.
Any idea on how to do this?

Thank you very much,
Dennis