function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Beveridge, Ian & Smales, Lesley R.', 1],
    ['Dronen, Norman O. & Blend, Charles K. & Gardner, Scott L.', 1],
    ['Kornyushin, Vadim & Salamatin, Ruslan & Greben, Oksana', 1],
    ['Kornyushin, Vadim & Salamatin, Ruslan & Świderski, Zdzisław', 1],
    ['Mariaux, Jean', 2],
    ['Mariaux, Jean & Georgiev, Boyko B.', 17],
    ['Mariaux, Jean & Vaucher, Claude', 1],
    ['Mettrick, D. F.', 1],
    ['Ortega-Olivares, Mirza P. & García-Prieto, Luis', 9],
    ['Ortega-Olivares, Mirza P. & Hernández-Mena, David I.', 1],
    ['Syrota, Ya. Yu. & Greben, O. B. & Poluda, A. M. & Maleha, O. M.', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=36)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 11, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);