Doug Oman, lead author of the study and a lecturer at UC Berkeley’s School of Public Health, said: “We found this difference even after adjusting for factors such as social connections and health behaviors, including smoking and exercising. ”
اظهاراتی که در این خصوص در ژورنال انجمن پزشکی استرالیا به چشم می‌خورد بسیار جالب توجه است .‏