Jick H, Porter J, Morrison AS, Rothman KJ. Lung cancer in young women. Arch Intern Med. 1979 Jul 1;139(7):745-6.
Jick H, Watkins RN, Hunter JR, Dinan BJ, Madsen S, Rothman KJ, Walker AM. Replacement estrogens and endometrial cancer. N Engl J Med. 1979 Jan 1;300(5):218-22.