function drawChartTreatmentsPerAuthor() {
  var chartData = google.visualization.arrayToDataTable([
    ['Series', 'Number of Treatments'],
    ['Akrami, Mohammad Ali', 3],
    ['Akrami, Mohammad Ali & Shahedi, Alireza', 2],
    ['Beck, L. & Woas, S.', 3],
    ['Behan-Pelletier, Valerie M. & Lindo, Zoë', 3],
    ['Ebrahimi, Forough & A, Mohammad', 2],
    ['Hushtan, Habriel H. & Hushtan, Kateryna V. & Glotov, Sergii V.', 2],
    ['Migliorini, Massimo', 3],
    ['Murvanidze, Maka & Cilbircioğlu, Cihan & Özdemir, Esengül', 2],
    ['Murvanidze, Maka & Mumladze, Levan', 4],
    ['Nakamura, K. & Nakamura, Y. - N. & Fujikawa, T.', 3],
    ['Nakamura, Y. - N. & Fukumori, S. & Fujikawa, T.', 2],
    ['Oliveira, Anibal R. & Argolo, Poliane S. & De, Gilberto J.', 3],
    ['Revelo-Tobar, Harol', 4],
    ['Schatz, Heinrich & Fortini, Lorenzo & Fusco, Tommaso', 3],
    ['Weigmann, G. & Miko, L.', 7],
    ['Other (17)', 20]
  ]);
  var chartOptions = {
    pieHole: 0,
    title: 'Treatments per Author (n=66)',
    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);