function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Amorim, Dalton De Souza', 17],
    ['Amorim, Dalton De Souza & Balbi, Maria Isabel P. A.', 6],
    ['Amorim, Dalton de Souza & Brown, Brian V.', 22],
    ['Bächli, Gerhard & Merz, Bernhard & Haenni, Jean-Paul', 9],
    ['Freeman, Paul', 5],
    ['Haenni, Jean-Paul', 17],
    ['Huerta, Heron', 6],
    ['Huerta, Heron & Dzul, Felipe', 9],
    ['Huerta, Heron & Dzul-Manzanilla, Felipe & Manrique-Saide, Pablo', 4],
    ['Huerta, Herón & Dzul, Felipe', 7],
    ['Huerta, Herón & Haenni, Jean-Paul', 4],
    ['Huerta, Herón & Ibáñez-Bernal, Sergio', 5],
    ['Jean- Paul Haenni & Dalton de Souza Amorim', 7],
    ['Jean-Paul Haenni', 13],
    ['Sinclair, Bradley J.', 7],
    ['Other (13)', 19]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=157)',
    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);