2. Monograph 16 ~ SHOULDER GIRDLE TRAUMA -- The Chiropractic Resource Organization
In further differentiation, there are some lesions that produce both neck and shoulder pain, certain disorders that produce pain predominantly in the shoulder, and some that typically produce shoulder pain with radiation into the arm.
http://www.chiro.org/rc_schafer/Monograph_16.shtml

3. eMedicine - Shoulder and Hemiplegia : Article by Robert Gould, DO -- Emedicine Clinical Knowledge...
Shoulder and Hemiplegia - Good shoulder function is a prerequisite for effective hand function, as well as for performing multiple tasks involving mobility, ambulation, and activities of daily living (ADL) A common sequela of stroke is hemiplegic...
http://www.emedicine.com/PMR/topic132.htm

4. NCPAD:Disability/Condition: Primer on Pain
Stretch anterior shoulder musculature including pectoralis and bicep muscles; strengthen posterior shoulder musculature and maintain range of motion in shoulder especially groups which control external rotations, and adduction.
http://ncpad.org/disability/fact_sheet.php?sheet=325&view=all