function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Diaz, Analía R. & Álvarez, Victor Hugo Merlo', 1],
    ['Fryer, Geoffrey & Boxshall, Geoffrey', 1],
    ['Müller, O. F.', 2],
    ['Müller, Otto Friedrich', 1],
    ['Olesen, Jørgen & Pöllabauer, Christine & Sigvardt, Zandra M. S.', 1],
    ['Pessacq, Pablo & Epele, Luis B. & Rogers, Christopher', 1],
    ['Richter, Stefan & Timms, Brian V.', 2],
    ['Rogers, D. Christopher & Hill, Matthew A.', 2],
    ['Sars, Georg Ossian', 1],
    ['Sigvardt, Zandra M. S. & Shu, Shusen & Alonso, Miguel', 1],
    ['TIMMS, BRIAN V', 6]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=19)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);