function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Anseeuw, Patrick & Puillandre, Nicolas & Utge, José', 3],
    ['Chen, Ronglian & Zhang, Faqi & Chen, Shilong & Chi, Xiaofeng', 1],
    ['Foster, William J & Danise, Silvia & Twitchett, Richard J.', 1],
    ['Foster, William J. & Danise, Silvia & Twitchett, Richard J.', 2],
    ['Herbert, David G.', 1],
    ['Jarvis, Charlie', 1],
    ['Ketwetsuriya, Chatchalerm & Karapunar, Baran', 20],
    ['Pacaud, Jean-Michel', 1],
    ['Turner, I. M.', 8],
    ['Yoo, E. K.', 35],
    ['Zhang, Suping & Zhang, Shuqian & Wei, Peng', 2]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=75)',
    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);