function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Chatterjee, Tapas & Dovgal, Igor', 2],
    ['Chatterjee, Tapas & Dovgal, Igor & Fernandez-Leborans, Gregorio', 3],
    ['Chatterjee, Tapas & Dovgal, Igor & Fontaneto, Diego', 1],
    ['Chatterjee, Tapas & Dovgal, Igor & Mayén-Estrada, Rosaura', 4],
    ['Chаtterjee, Tаpаs & Dovgаl, Igor & Pešić, Vlаdimir', 2],
    ['Durán-Ramírez, Carlos Alberto & Dias, Roberto Júnio Pedroso', 2],
    ['Mayén-Estrada, Rosaura & Pinto Utz, Laura R.', 31],
    ['Müller, Otto Friedrich', 40],
    ['Pereira, Marcos W. O. & Brito, Fabiano Carvalho', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=87)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 9, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);