function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Campos-Filho, Ivanklin Soares & Araujo, Paula Beatriz', 2],
    ['Cifuentes, Julio & Da Silva, Luis P.', 4],
    ['Garcia, Lluc', 3],
    ['Karl W. Verhoeff', 1],
    ['Reboleira, Ana Sofia P. S. & Gonçalves, Fernando & Oromí, Pedro', 5],
    ['Recuero, Ernesto & Rodríguez-Flores, Paula C.', 9],
    ['Taiti, Stefano & Argano, Roberto', 2],
    ['Taiti, Stefano & Montesanto, Giuseppe', 8],
    ['Taiti, Stefano & Rossano, Claudia', 6],
    ['Taiti, Stefano & Wynne, J. Judson', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=41)',
    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);