function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Albrecht, Anders Christian', 30],
    ['Alvarez-Zapata, Alejandra & Ferreira, Paulo S. F.', 2],
    ['Lu, Wenhua & Souphanya, Phetsamon & Montgomery, Michael E.', 1],
    ['Stekolshchikov, Andrey V. & Buga, Sergey V.', 1],
    ['Stekolshchikov, Andrey V. & Khruleva, Olga A.', 1],
    ['Williams, Douglas J. & Ben-Dov, Yair', 1],
    ['Yu, Guoyue & Montgomery, Michael E. & Yao, Defu', 1]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=37)',
    fontSize: 'automatic',
    doWeHaveDanglingCommas: 'No ;-)'
  };
  if (window.customizeGoogleChartOptions)
    customizeGoogleChartOptions(chartOptions, 'TreatmentsPerAuthor', 'pie', 7, 0);
  var chart = new google.visualization.PieChart(document.getElementById('chartDivTreatmentsPerAuthor'));
  chart.draw(chartData, chartOptions);
}
google.load('visualization', '1', {'packages': ['corechart']});
google.setOnLoadCallback(drawChartTreatmentsPerAuthor);