function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Almeida, Ana C. S. & Souza, Facelucia B. C. & Menegola, Carla', 1],
    ['Gerovasileiou, Vasilis & Rosso, Antonietta', 8],
    ['Gordon, Dennis P.', 1],
    ['Grischenko, Andrei V. & Dick, Matthew H. & Mawatari, Shunsuke F.', 3],
    ['HAYWARD, PETER J. & McKINNEY, FRANK K.', 1],
    ['Harmelin, Jean-Georges', 1],
    ['Ikezawa, Hiromi & Mawatari, Shunsuke F.', 2],
    ['Ramalho, Laís V. & Muricy, Guilherme & Taylor, Paul D.', 1],
    ['Winston, Judith E. & Vieira, Leandro M.', 2],
    ['Zágoršek, K. & Fordinál, K.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=21)',
    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);