Sorry gotta ask: Ive seen it a lot on here that people replace the “th” with " þ" is there a reason behind that?

And the introduction is rather short. I will post it Here as well.

The observation that subjects with specific phenotypic traits are prone to the development of particular organic or psychiatric disor- ders is an old medical tenet. Nowadays, these relationships tend to be explained based on genotype-phenotype associa- tions, which have been suggested for over one hundred disorders, including diabetes, obesity, Crohn’s disease, and hypertension (1, 2). Along this line, some recent advances in endometriosis research fit this view, as multiple studies have contributed to the definition of a general phenotype associated with the disease (3–12). Intriguingly, such an emerging phenotype appears to be indirectly linked with attractiveness, because several of the physical characteristics studied, including body size, body mass index (BMI), and pigmentary traits (4, 5, 7, 8, 11–13), have an impact on perception of beauty (14, 15). A biological gradient between the degree of expression of these traits and the degree of severity of endometriosis has also emerged. As an example, with regard to body size and figure, an inverse relationship has been observed between BMI and severity of the disease in general (8), and in particular in patients with deep endometriosis (12). Despite this growing body of evidence, studies formally investigating attractiveness in women with endo- metriosis are lacking. To verify the potential relationship between endometriosis and attrac- tiveness, and to substantiate a pos- sible biological gradient between aggressiveness of the disease and de- gree of attractiveness, we designed a case-control study recruiting three groups of subjects, that are, women with deep rectovaginal forms, women with peri- toneal implants and/or ovarian cysts but without rectovaginal lesions, and women without endometriosis. The degree of physical attractiveness, the main study outcome, was assessed by independent female and male observers. Secondary out- comes were definition of selected morphological characteris- tics and sexual habits. Information on pain at intercourse and on sexual functioning in the three study groups is reported elsewhere.

I dont See how this study aides the body of research but I am also not in that field.

From the studies abstract.

[…] Patient(s): Three hundred nulliparous women. Intervention(s): Assessment of attractiveness by four independent female and male observers. Main Outcome Measure(s): A graded attractiveness rating scale. Result(s): A total of 31 of 100 women in the rectovaginal endometriosis group (cases) were judged as attractive or very attractive, compared with 8 of 100 in the peritoneal and ovarian endometriosis group and 9 of 100 in the group of subjects without endometriosis. A higher proportion of cases first had intercourse before age 18 (53%, 39%, and 30%, respectively). The mean
SD body mass index in women with rectovaginal endometriosis, in those with other disease forms, and in those without endometriosis was, respectively, 21.0
2.5, 21.3
3.3, and 22.1
3.6. The median (interquartile range) waist-to-hip ratio and breast-to-underbreast ratio were, respectively, 0.75 (0.71–0.81), 0.76 (0.71–0.81), and 0.78 (0.73–0.83), and 1.15 (1.12–1.20), 1.14 (1.10–1.17), and 1.15 (1.11–1.18). Conclusion(s): Women with rectovaginal endometriosis were judged to be more attractive than those in the two control groups. Moreover, they had a leaner silhouette, larger breasts, and an earlier coitarche. (Fertil Steril
2013;99:212–8. 2013 by American Society for Reproductive Medicine.)

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