The use of sand-timers in the measurement of respiratory and pulse rates in children.
Bolton
J
J
Cartmill
A
A
Coakley
K
K
Saleu
G
G
Smith
T
T
D002648:Child; D003150:Community Health Workers / Q000379:methods*; D006339:Heart Rate; D006801:Humans; D010219:Papua New Guinea; D012119:Respiration; D013995:Time; D014894:Weights and Measures