function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Ahmad, J.', 1],
    ['Amato, J. F. R', 1],
    ['Arabuli, Lela & Murvanidze, Lali & Faltynkova, Anna', 2],
    ['Figueroa, Luis & Puga, Sonia', 1],
    ['Fischthal, Jacob H. & Thomas, J. D.', 2],
    ['Gupta, V. & Ahmad, J.', 1],
    ['Layman, E. M.', 1],
    ['Li, Q. - k. & Qiu, Z. - z. & Chen, X. X. & Liang, Z.', 1],
    ['Liu, S. F.', 2],
    ['Looss, A.', 2],
    ['Lopes, Daniela A. & Mainenti, Adriana & Knoff, Marcelo', 1],
    ['Margarita Ostrowski de Núñez & Nathalia J. Arredondo', 2],
    ['Overstreet, Robin M.', 2],
    ['Srivastava, H. D.', 2],
    ['Yamaguti, S.', 3],
    ['Other (15)', 15]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=39)',
    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);