Epidemiology (1) Methods (1) Young adults (1) World health (1) Public health (1) Probabilities (1) Plausibility (Logic) (1) Nicotine (1) Mixing (1) Middle age (1) Men (1) Memory (1) Longitudinal method (1) Cycles (1) Cannabis (1) Methods (1) Mathematical models (1) Research (1) Use (1) Usage (1) Measurement (1) Women (1) Societies, etc (1) Societies and clubs (1) Ursa Minor (1) Growth (1) Exercise (1) Animales--Crecimiento (1) Educación--Fines y objetivos (1) Investigación (1)