RT Journal Article SR Electronic T1 Sex and health JF Clinical Medicine JO Clin Med FD Royal College of Physicians SP 181 OP 184 DO 10.7861/clinmedicine.4-2-181 VO 4 IS 2 A1 Claire Ryan A1 Karen E Rogstad YR 2004 UL http://www.rcpjournals.org/content/4/2/181.abstract AB