Tobacco smoking is the major etiological factor.
Viruses are major etiological agents of childhood gastroenteritis.
To evaluate whether large for gestational age (LGA) etiological subgroups have differential growth trajectories during early childhood.
A major etiological factor for peri-implantitis is the position of the implant in the surrounding bone [2].
Human Norovirus (NoV) is recognized as a major etiological agent of sporadic acute gastroenteritis worldwide.
Coxsackievirus A24 variant is one of the major etiological agents involved in acute haemorrhagic conjunctivitis.
Epidemiological studies have reported that tobacco use is a major etiological factor for oral cancer.
Human rotavirus genotypes G1 G4 and G9 are the major etiological agents of infantile gastroenteritis.
Noroviruses (NoVs) are a major etiological agent of sporadic acute gastroenteritis worldwide.
Besides acute gastroenteritis, major etiological agents such as Giarida, Cryptosporadium, E. coli 0157 H7, V. cholera, and Salmonella were the agents responsible for many outbreaks (Craun et al. [2006]).
