function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Guérin-Méneville, Félix Édouard', 11],
    ['Herger, Peter & Germann, Christoph & Uhlig, Manfred', 1],
    ['Klausnitzer, B.', 2],
    ['Klausnitzer, Bernhard', 4],
    ['Latreille, Pierre André', 1],
    ['Litovkin, S. V. & Efimov, D. А.', 1],
    ['Nakane, Takehiko & Ohbayashi, Kazuo & Nomura, Shizumu', 1],
    ['Pic, Maurice', 14],
    ['Ruta, Rafał', 2],
    ['Satô, Masataka Dr.', 1],
    ['Webster, Reginald P. & Sweeney, Jon D. & DeMerchant, Ian', 1],
    ['Yoshitomi, Hiroyuki Dr.', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=41)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 12, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);