function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Asano, H. & Okamura, Osamu', 1],
    ['Fourmanoir, Pierre & Guézé, Paul', 1],
    ['Golani, Daniel & Baranes, Albert', 1],
    ['Hardy, Graham S.', 1],
    ['Last, Peter R. & Richards, William J.', 3],
    ['Richards, William J. & Yato, Takuji', 15],
    ['Yato, Takuji & Heemstra, Elaine', 1],
    ['Yatou, T. & Yamakawa, Takeshi', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=24)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 8, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);