 <span class='fu'>blood_vol_Lemmens_non_obese</span>(<span class='fl'>80</span>, <span class='kw'>age_y</span> <span class='kw'>=</span> <span class='fl'>25</span>, <span class='kw'>male</span> <span class='kw'>=</span> <span class='fl'>TRUE</span>)</div><div class='output co'>#&gt; [1] 6400</div><div class='input'>  <span class='fu'>blood_vol_Lemmens_non_obese</span>(<span class='fl'>80</span>, <span class='kw'>age_y</span> <span class='kw'>=</span> <span class='fl'>75</span>, <span class='kw'>male</span> 