You will be shown the abstract of a medical clinical trial report. Your task is to extract all the findings from this report into a JSON array. Each finding should contain the following five elements:

- Intervention: The medical intervention being tested. This should be a text span copied from the input passage.
- Comparator: The baseline against which the intervention is being evaluated. This should be a text span copied from the input passage. If no comparator is reported, set to `null`.
- Outcome: The medical outcome whose effect is being measured. This should be a text span copied from the input passage.
- Effect: The effect of the intervention on the outcome, relative to the comparator. The effect should be one of the following three values: ("significantly increased", "significantly decreased", "no significant difference").
- Evidence: The evidence for the effect. This should be a text span copied from the input passage.

Please format your output as a JSON array. Each entry in the output should be an array containing the 5 elements listed above, in the following order: [<intervention>, <comparator>, <outcome>, <effect>, <evidence>].

For example, an output with two findings might read:
```
[["aspirin", "placebo", "headache severity", "significantly decreased", "Mean headache severity was significantly decreased in the aspirin group compared to the placebo group (p < 0.05)."], ["aspirin", "placebo", "weight loss", "no significant difference", "We did not observe any difference in weight loss between the group given aspirin relative to the control group"]]
```

There are 5 finding(s) in the abstract below. Please extract them. Output only the JSON array with these 5 findings. Do not include any additional text.

Abstract:
ABSTRACT.BACKGROUND: This study was designed to determine whether small diameter needles for oocyte retrieval alter oocyte yields in patients undergoing IVF in comparison to standard large diameter needles.

ABSTRACT.METHODS: We conducted a prospective pilot study of 21 consecutive favorable prognosis patients. In each patient one ovary was randomly allocated to retrieval with either a 20 G/ 35 mm (thin) or 17 G/ 35 mm (standard) needle, the other ovary was then retrieved with the opposite needle.

ABSTRACT.RESULTS: The standard diameter needle was used to collect a total of 215 oocytes from 355 aspirated follicles (60.6%) compared to 203 oocytes from 352 aspirated follicles (57.7%) with the thinner needle (p = 0.23). Stratifying outcomes by anti-Müllerian hormone (AMH), as indicator of ovarian reserve, and by body mass index (BMI) the oocyte yields, still, did not differ (AMH, r (17) = −0.20, p = 0.44; BMI, r (17) =0.02, p = 0.96). Outcomes also did not vary among women with diminished ovarian reserve (p = 0.17) and in women with normal ovarian reserve (p = 1.00). Operating time was, however, significantly increased by 3.3 minutes per ovary (z = −3.08, p = 0.002) with the thinner needle.

ABSTRACT.CONCLUSIONS: Needle diameter does not affect oocyte yield, including in obese patients and patients with diminished ovarian reserve. Thinner needles appear to significantly prolong operating time.

Findings:
[["20 G/ 35 mm (thin) needle", "17 G/ 35 mm (standard) needle", "The number of oocytes per the number of aspirated follicles", "no significant difference", "The standard diameter needle was used to collect a total of 215 oocytes from 355 aspirated follicles (60.6%) compared to 203 oocytes from 352 aspirated follicles (57.7%) with the thinner needle (p = 0.23)."], ["20 G/ 35 mm (thin) needle", "17 G/ 35 mm (standard) needle", "oocyte yield among women with normal ovarian reserve", "no significant difference", "Stratifying outcomes by anti-Mu\u0308llerian hormone (AMH), as indicator of ovarian reserve, and by body mass index (BMI) the oocyte yields, still, did not differ (AMH, r (17) = \u22120.20, p = 0.44; BMI, r (17) =0.02, p = 0.96)."], ["20 G/ 35 mm (thin) needle", "17 G/ 35 mm (standard) needle", "Operating time", "significantly increased", "Operating time was, however, significantly increased by 3.3 minutes per ovary (z = \u22123.08, p = 0.002) with the thinner needle."], ["20 G/ 35 mm (thin) needle", "17 G/ 35 mm (standard) needle", "oocyte yields among women with diminished ovarian reserve", "no significant difference", "Stratifying outcomes by anti-Mu\u0308llerian hormone (AMH), as indicator of ovarian reserve, and by body mass index (BMI) the oocyte yields, still, did not differ (AMH, r (17) = \u22120.20, p = 0.44; BMI, r (17) =0.02, p = 0.96)."], ["20 G/ 35 mm (thin) needle", "17 G/ 35 mm (standard) needle", "Oocyte yield", "no significant difference", "the oocyte yields, still, did not differ (AMH, r (17) = \u22120.20, p = 0.44; BMI, r (17) =0.02, p = 0.96)."]]