const fields = ["nome", "r_g", "c_p_f", "data_de_nascimento", "endereco", "telefone"]

const data = _val.map();
var errors = _val.list();

for (field of fields) {
    let value = _req.getString(field);
    if (!value) {
        errors.add(field);
    } else {
        data.set(field, value);
    }
}

if (errors.isEmpty()) {
    var insertedData = _db.insertIfNotExists(
        'paciente',
        data
    );
    _out.json({insertedData: insertedData})
} else {
    _out.json({"erros": {"campos_faltando": errors}})
}