Given an abstract, indicate which of the provided candidate titles (Option1 and Option2) best describes it (respond with the text of the title, not option1/2).

Input: Consider Input: Abstract: We did complete histologic study on 148 gravid tubes and found that nearly 90% showed chronic lesions. CS was the most frequent lesion encountered (95.5%), followed by SIN (32.6%). Most frequently the lesions were extensive and both the ampulla and isthmus were involved. We therefore question the conservative approach in the treatment of certain TPs. 
 Which is the apt title for the abstract? option1: Tubal causes of ectopic pregnancy. option2: AAMC longitudinal study of 1960 medical school graduates: a 20-year effort in 28 schools, 1956-1976 [editorial]

Output: Tubal causes of ectopic pregnancy.


Input: Consider Input: Abstract: Using a computed video image analysis system, the staining intensity for both neurone specific enolase (NSE) and S100 protein was measured in sections from 19 malignant melanomas and 16 benign melanocytic lesions. The results of this study confirm previous reports that NSE and S100 protein are useful markers for malignant melanoma. NSE staining intensity in the cases of malignant melanoma was significantly higher than that in benign naevi (p = 0.011). Intensity of staining for S100 protein was not significantly higher in the malignant melanomas. There was, however, a significant S100 gradient when comparing superficial and deep intradermal portions of these tumours (p = 0.003). This feature was not seen in benign naevi. The greatest intensity of S100 protein staining was found in the deeper portions of the malignant melanomas. This gradient difference was not seen with staining for NSE. Although it seems that the overall intensity of staining for NSE is more effective in differentiating between benign and malignant lesions, the difference in staining intensity between the superficial and deep portions of the tumour may be the better indicator of adverse behaviour in lesions in which the diagnosis of malignancy is uncertain. 
 Which is the apt title for the abstract? option1: Measuring S100 protein and neurone specific enolase in melanocytic tumours using video image analysis. option2: Father's drinking (and smoking) and infant's birth weight [letter]

Output: Measuring S100 protein and neurone specific enolase in melanocytic tumours using video image analysis.


Input: Consider Input: Abstract: A simple preoperative classification is described to predict the intrauterine and ectopic pregnancy rates following distal tubal microsurgery. Laser CO2 microsurgical salpingostomies were performed on 76 patients between January 1979 and January 1984. All of the patients underwent a preoperative assessment, which included hysterosalpingogram and laparoscopy, to formulate a preoperative classification based on a point system. The patients were divided into four groups according to tubal damage, with a subsequent intrauterine pregnancy rate of 58.3% in grade I, 36.6% in grade II, 9.5% in grade III, and 0% in grade IV. The patients were divided into four groups according to adhesions, with a subsequent intrauterine pregnancy rate of 38.8% with no adhesion, 32.0% with mild adhesions, 26.6% with moderate adhesions, and 5.5% with severe adhesions. From these results, a preoperative management is proposed for patients being considered for either distal tubal microsurgery or in vitro fertilization. 
 Which is the apt title for the abstract? option1: A preoperative classification to predict the intrauterine and ectopic pregnancy rates after distal tubal microsurgery. option2: Endometrial biopsy in the infertility investigation. The experience at two institutions.


Output: A preoperative classification to predict the intrauterine and ectopic pregnancy rates after distal tubal microsurgery.


