The genres of pornography are based on the type of activity featured and the category of participants, for example mateur pornography is a category of pornography that features models, actors or non-professionals performing without pay, or actors for whom this material is their only paid modeling work. If dramatic skills are not involved, a performer in a porn film may also be called a model. Mammary intercourse is a sex act, performed as foreplay or as non-penetrative sex, that involves the stimulation of the male penis by the female breasts and vice versa. Group sex pornography features at least two men and two women , usually more, who all perform sex acts on each other. For circumcised males, on whom the glans is mostly or completely uncovered, this technique creates more direct contact between the hand and the glans. Women oriented pornography is sometimes referred to as sex positive pornography. Particular areas and processes of the body that change during pregnancy may also become the focus of psychological investment, but nudity or sexual activity is not always essential, and in some cases actual pregnancy is not necessary to invoke arousal. This industry employs thousands of performers along with support and production staff. Stimulating the prostate from outside, via pressure on the perineum, can be pleasurable as well. Target celebrity sex free audience are teenage / young adult women. Among swinging couples, one of the two partners is often the driving force and the other is more passive-supportive of the addition of additional sex parties. BDSM communities generally welcome anyone with a non-normative streak who identifies with the community; this may include cross-dressers, extreme body mod enthusiasts, animal players, latex or rubber aficionados, and others. Once insertion is complete, the fingers are either clenched into a fist or kept straight. Though there have been numerous gang bang pornographic films since the 1980s, they usually involved no more than half a dozen to a dozen men.
Medika - Jurnal Kedokteran Indonesia" />
*Departemen Pulmonologi dan Ilmu Kedokteran Respirasi FKUI/ RS Persahabatan
**Departemen Kardiologi dan Ilmu Kedokteran Vaskuler FKUI/ RS Jantung Harapan Kita
Penyakit paru obstruktif kronik (PPOK) merupakan salah satu penyebab kesakitan dan kematian utama di dunia. Data Badan Kesehatan Dunia (WHO) menunjukkan bahwa pada 1990 PPOK menempati urutan ke-6 sebagai penyebab kematian utama di dunia dan data WHO 2002 menunjukkan PPOK menjadi penyebab kematian keempat di dunia serta akan menjadi penyebab kematian ketiga di dunia pada 2020.1,2