Authors: G E Gray; M C Pike; T Hirayama; J Tellez; V Gerkins; J B Brown; J T Casagrande; B E Henderson Journal: Prev Med Date: 1982-01 Impact factor: 4.018
Authors: G Montes; C Cuello; P Correa; G Zarama; G Liuzza; D Zavala; E de Marin; W Haenszel Journal: J Cancer Res Clin Oncol Date: 1985 Impact factor: 4.553