Keyword | CPC | PCC | Volume | Score |
---|---|---|---|---|
polio and the iron lung | 1.68 | 0.3 | 8752 | 23 |
polio and the iron lung 1950's | 0.25 | 0.2 | 5130 | 78 |
iron lung polio | 1.72 | 0.6 | 840 | 29 |
iron lungs for polio | 1.28 | 0.4 | 1583 | 73 |
how does an iron lung work for polio patients | 1.29 | 0.4 | 5349 | 48 |
paul polio iron lung | 1.87 | 0.6 | 6519 | 53 |
polio survivor iron lung | 0.92 | 0.2 | 9158 | 72 |
iron lung polio paul alexander | 0.11 | 0.3 | 1872 | 25 |
why do people with polio need an iron lung | 1.01 | 0.5 | 800 | 22 |
polio iron lung survivors | 1.72 | 0.1 | 5268 | 81 |
polio iron lung machine | 0.23 | 0.4 | 3361 | 59 |