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Return home from the field study The following areas should be completed prior to departing for fieldwork: Identify the research site(s) (if not already done in research plan) Obtain research clearance and visas if necessary Gain access to the individuals, groups or organizations involved in issues relevant to the study Finalize the research design Finalize the selection of methods Acquire appropriate fieldwork equipment and supplies Consider and plan for ethical considerations Train a research team Identify research site(s): The choice of the site is tied closely to the purpose and focus of the research

Is it all over

Prenatal exposure to cannabis and maternal and child health outcomes: a systematic review and meta-analysis

The filter must be cleaned in time if it is not used for a long time to prevent the smoke oil from being difficult to clean after drying, which affects its usability