Fig. 1
From: A hypothesis study on a four-period prevention model for high altitude disease
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40779-018-0150-0/MediaObjects/40779_2018_150_Fig1_HTML.gif)
Four-period prevention model for mountain sickness
From: A hypothesis study on a four-period prevention model for high altitude disease
Four-period prevention model for mountain sickness