function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Breure, Abraham S. H. & Tardy, Emmanuel', 2],
    ['Chase, Mark W. & Thijs, Koen W. & Kamau, Peris & Fay, Michael F.', 1],
    ['Jarvis, Charlie', 6],
    ['Leal, Miguel E.', 1],
    ['Linnaeus, Carolus', 3],
    ['Machado, Anderson F. P. & Pereira, Jorge Fontella', 1],
    ['Ramella, Lorenzo & Soloaga, Mónica & Perret, Patrick', 7],
    ['Santos, Alessandra dos & Neto, Sergio Romaniuc', 1],
    ['Vianna, Marcelo D. M. & Santos, Alessandra Dos', 1],
    ['Zhou, Ya-Dong & Mwachala, Geoffrey & Hu, Guang-Wan', 3]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=26)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 10, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);