.

Jones criteria?

No, it's about the natural history of the disease

Ya I meant they're the major diagnostic criteria

The 3 first symptoms are normally seen within the first 2 months , while the late 2 symptoms will normally take 3 up to 6 months to manifest

بالامتحان خربطت بينهن وبين ال criteria مال infective endocarditis

According to a widespread belief, the average IQ of university students is 115 to 130 IQ points, that is, substantially higher than the average IQ of the general population (100).
Examination of more recent IQ data indicate that IQ of university students and university graduates dropped to the average of the general population. 

The decline in students' IQ is a necessary consequence of increasing educational attainment over the last 80 years. Today, graduating from university is more common than completing high school in the 1940s. 

These findings have wide-ranging implications:
First, universities and professors need to realize that students are no longer extraordinary but merely average, and have to adjust curricula and academic standards.
Second, employers can no longer rely on applicants with university degrees to be more capable or smarter than those without degrees.
Third, students need to realize that acceptance into university is no longer an invitation to join an elite group.

Ankylosing spondylitis can affect the pulmonary system and cause respiratory complications like chest wall restriction, apical fibrobullous disease with or without secondary pulmonary superinfection, spontaneous pneumothorax, and obstructive sleep apnea. 

 A restrictive ventilatory impairment can develop in patients with ankylosing spondylitis because of either fusion of the costovertebral joints and ankylosis of the thoracic spine or anterior chest wall involvement.

So, apparently we don't do ADR at the level of C4-C5 because of their wide range of motion.

Also, here's this weird thing:

Cyanocobalamin cannot cross the blood-brain barrier, while mythelcobalamin can. This is why you should use the latter (not the former) for neuropathy caused by B12-deficiency.

This is called "cage and plate" implant. It's the conventional and classic technique.

There's a different "cage" technique that's called: zero-profile ACDF (Anterior Cervical Discectomy & Fusion)