T. Siljander & O. Lyytikäinen & S. Vähäkuopus &
M. Snellman & J. Jalava & J. Vuopio

Elena Ferrer, MD,* Luis del Rio, MD,† Esteban Martínez, MD, PhD,‡ Jordi Curto, MSc,* PhD, Pere Domingo, MD, PhD,§ Esteban Ribera, MD, PhD,║ Eugenia Negredo, MD, PhD,¶ Joaquim Rosales, MD,† Maria Saumoy, MD,* Jordi Ordóñez, MD,# Josep M. Gatell, MD, PhD,‡ and Daniel Podzamczer, MD, PhD*

Laura S. Redwine, PHD,*† Petra H. Wirtz, PHD,‡ Suzi Hong, PHD,* Jos Bosch, PHD,§
Michael G. Ziegler, MD,† Barry Greenberg, MD,† Paul J. Mills, PHD*

Gordon S. Doig a,*, Philippa T. Heighes b, Fiona Simpson a, Elizabeth A. Sweetman b

Amy Berrington de Gonzalez, D.Phil., Patricia Hartge, Sc.D.,
James R. Cerhan, Ph.D., Alan J. Flint, Dr.P.H., Lindsay Hannan, M.S.P.H.,
Robert J. MacInnis, Ph.D., Steven C. Moore, Ph.D., Geoffrey S. Tobias, B.S.,
Hoda Anton-Culver, Ph.D., Laura Beane Freeman, Ph.D.,
W. Lawrence Beeson, Dr.P.H., Sandra L. Clipp, M.P.H., Dallas R. English, Ph.D.,
Aaron R. Folsom, M.D., D. Michal Freedman, Ph.D., Graham Giles, Ph.D.,
Niclas Hakansson, Ph.D., Katherine D. Henderson, Ph.D.,
Judith Hoffman-Bolton, Jane A. Hoppin, Sc.D., Karen L. Koenig, Ph.D.,
I-Min Lee, Sc.D., Martha S. Linet, M.D., Yikyung Park, Sc.D., Gaia Pocobelli, M.S.,
Arthur Schatzkin, M.D., Howard D. Sesso, Sc.D., Elisabete Weiderpass, Ph.D.,
Bradley J. Willcox, M.D., Alicja Wolk, Dr.Med.Sci., Anne Zeleniuch-Jacquotte, M.D.,
Walter C. Willett, M.D., Dr.P.H., and Michael J. Thun, M.D.

Jari Halonen, MD; Pertti Loponen, MD; Otso Ja¨ rvinen, MD, PhD; Jari Karjalainen, MD, PhD; Ilkka Parviainen, MD, PhD; Pirjo Halonen, PhD;
Jarkko Magga, MD, PhD; Anu Turpeinen, MD, PhD; Mikko Hippela¨ inen, MD, PhD; Juha Hartikainen, MD, PhD; and Tapio Hakala, MD, PhD

HIDETAKA URAMOTO1, RYOICHI NAKANISHI2, AKIRA NAGASHIMA3, AKIHIKO UCHIYAMA4,
MASAAKI INOUE5, TOSHIHIRO OSAKI6, TAKASHI YOSHIMATSU7,
HISANOBU SAKATA8, KOZO NAKANISHI6 and KOSEI YASUMOTO1

N. BURKHARDT, J. JÜCKSTOCK, C. KUHN, B. RACK, W. JANNI,
C. SCHINDLBECK, H. SOMMER, K. FRIESE and I. MYLONAS

Marco A. Zenati, MD,a,b A. Laurie Shroyer, PhD,c,d Joseph F. Collins, ScD,e Brack Hattler, MD,c
Takeyoshi Ota, MD, PhD,f,g G. Hossein Almassi, MD,h Morteza Amidi, MD,f Dimitri Novitzky, MD, PhD,i
Frederick L. Grover, MD,c and Ali F. Sonel, MDf

Young-Lan Kwak, MD, PHD,*† Jong-Chan Kim, MD,* Yong-Seon Choi, MD,*
Kyung-Jong Yoo, MD, PHD,‡ Young Song, MD,* Jae-Kwang Shim, MD, PHD*
Seoul, South