3 ms·
I hope that they controlled for factors like smoking cigarettes.
by pazimzadeh 11y ago
I hope that they controlled for factors like smoking cigarettes.
- raverbashing 11y agoThis might be a significant factor indeed (including passive smoking)
- desdiv 11y agoThey have [0][1]. [0] http://i.imgur.com/mQZ1ST9.png http://i.imgur.com/mQZ1ST9.png [1] http://i.imgur.com/Hi1x4Ab.png http://i.imgur.com/Hi1x4Ab.png