Search results for: ROBERT W JEFFERY
Preventive Medicine > 2000 > 31 > 4 > 299-307
Preventive Medicine > 2000 > 30 > 3 > 217-224
Preventive Medicine > 1999 > 29 > 6 > 590-598
Preventive Medicine > 2000 > 31 > 4 > 299-307
Preventive Medicine > 2000 > 30 > 3 > 217-224
Preventive Medicine > 1999 > 29 > 6 > 590-598