| #261 | American journal of physiology, Gastrointestinal and liver physiology. -- Bethesda : American Physiological Society, 1980-. -- ISSN 0193-1857 print. -- ISSN 1522-1547 online |
| #262 | American journal of physiology, Lung cellular and molecular physiology. -- Bethesda : American Physiological Society, 1989-. -- ISSN 1040-0605 print. -- ISSN 1522-1504 online |
| #263 | American journal of physiology, Renal, fluid and electrolyte physiology. -- Bethesda : American Physiological Society, 1977-1996. -- ISSN 0363-6127 print. -- ISSN 1522-1466 online |
| #264 | American journal of preventive medicine. -- New York : Oxford University Press, 1985-. -- ISSN 0749-3797 print. -- ISSN 1873-2607 online |
| #265 | American journal of proctology, gastroenterology & colon & rectal surgery. -- Georgetown : McMahon, 1975-1985. -- ISSN 0162-6566 |
| #266 | American journal of psychiatry. -- Washington : American Psychiatric Association, 1921-. -- ISSN 0002-953X print. -- ISSN 1535-7228 online |
| #267 | The American journal of psychoanalysis. -- New York : Human Sciences, 1941-. -- ISSN 0002-9548 print. -- ISSN 1573-6741 online |
| #268 | American journal of public health. -- New York : American Public Health Association, 1971-. -- ISSN 0090-0036 print. -- ISSN 1541-0048 online |
| #269 | American journal of reproductive immunology. -- Oxford : Blackwell, 1989-. -- ISSN 1046-7408 print. -- ISSN 1600-0897 online |
| #270 | American journal of respiratory and critical care medicine. -- New York : American Lung Association, 1994-. -- ISSN 1073-449X print. -- ISSN 1535-4970 online |