Please assess the completion status of the following clinical trial:

Trial Title: Low-FODMAP Diet for Functional Abdominal Pain Disorders in Children.

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* functional abdominal pain - not otherwise specified (FAP-NOS) or irritable bowel syndrome (IBS) diagnosed according to the Rome IV Criteria,~* baseline average pain intensity at least 30 mm on a 100-mm Visual Analogue Scale,~* feeding via the oral route,~* ability to read and comprehend any employed questionnaires/scales,~* signed informed consent,~* stated availability throughout the study period.~Exclusion Criteria:~* receiving any other intervention/treatment with regard to FAP-NOS or IBS or those who received any other intervention during the last 3 months,~* an organic cause of symptoms or organic gastrointestinal disease,~* chronic illness, receiving medications which affect gastrointestinal motility,~* need for any other dietary management which could make the balancing or compliance with the diet troublesome,~* previously diagnosed carbohydrate intolerance without symptoms of FAPD after implementation of an exclusion diet,~* undernutrition (defined as World Health Organization \[WHO\] growth charts \< -2 SD), decreased growth velocity (sharp decline in growth line), or overweight or obese (\> 1 or \> 2 SD on the WHO growth charts, respectively),~* unintentional weight loss greater or equal to 5% of subject' body weight within the previous 3 months,~* pregnancy,~* eating disorders,~* prior surgery of the gastrointestinal tract (within last 3 months),~* recurrent or unexplained fever,~* developmental disabilities which impair the ability of the child to understand or communicate.

- Gender: ALL
- Minimum Age: 8 Years
- Maximum Age: 18 Years
- Healthy Volunteers: f

Study Arms:
- Low-FODMAP diet (Type: EXPERIMENTAL): 37 participants.
- Regular diet (Type: NO_INTERVENTION): 37 participants. The regular diet will reflect the habitual FODMAP intake in a normal diet.~Diets in both groups will be matched in terms of total energy, fat, protein, carbohydrates and dietary fiber with the usual participant's diet.

Based on this trial design, predict the completion outcome and termination type (if applicable).