function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Akrami, Mohammad Ali', 3],
    ['Akrami, Mohammad Ali & Shahedi, Alireza', 3],
    ['Behan-Pelletier, Valerie M. & Lindo, Zoë', 7],
    ['Ebrahimi, Forough & A, Mohammad', 1],
    ['Liu, Dong & Chen, Jun', 10],
    ['Niedbala, Wojciech', 2],
    ['Niedbała, W.', 7],
    ['Niedbała, Wojciech', 8],
    ['Niedbała, Wojciech & Ermilov, Sergey G.', 2],
    ['Niedbała, Wojciech & Liu, Dong', 9],
    ['Niedbała, Wojciech & Starý, Josef', 16],
    ['Niedbała, Wojcieh', 2],
    ['Norton, Roy A. & Ermilov, Sergey G.', 2],
    ['Oliveira, Anibal R. & Argolo, Poliane S. & De, Gilberto J.', 11],
    ['Revelo-Tobar, Harol', 14],
    ['Other (8)', 8]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=105)',
    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);