function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Akrami, Mohammad Ali', 1],
    ['Beck, L. & Woas, S.', 1],
    ['Behan-Pelletier, Valerie M. & Lindo, Zoë', 11],
    ['Bolger, Thomas', 1],
    ['Brückner, Adrian & Barnett, Austen A. & Bhat, Prashant', 2],
    ['Ermilov, Sergey G. & Corpuz-Raros, Leonila', 1],
    ['Mahunka, S.', 2],
    ['Norton, Roy A. & Ermilov, Sergey G.', 4],
    ['Oliveira, Anibal R. & Argolo, Poliane S. & De, Gilberto J.', 8],
    ['Olszanowski, Z. & Szywilewska-Szczykutowicz, A. & Blaszak, C.', 7],
    ['Revelo-Tobar, Harol', 5],
    ['Szywilewska-Szczykutowicz, Anetta & Olszanowski, Ziemowit', 2],
    ['Weigmann, G. & Miko, L.', 13],
    ['Weigmann, Gerd & Raspotnig, Günther', 10],
    ['van der Hammen, L.', 8],
    ['Other (11)', 11]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=87)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 16, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);